diff --git a/.gitignore b/.gitignore
index c422267..ee05c83 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,12 @@
 composer.phar
-/vendor/
+vendor
 
 # Commit your application's lock file http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file
 # You may choose to ignore a library lock file http://getcomposer.org/doc/02-libraries.md#lock-file
 # composer.lock
+
+# Ignore testing directories
+bats
+bin
+libexec
+share
diff --git a/LICENSE b/LICENSE
index bf7bebf..ec10696 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
-MIT License
+The MIT License (MIT)
 
-Copyright (c) 2017 Terminus Plugin Project
+Copyright (c) 2016 Pantheon
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..164553c
--- /dev/null
+++ b/README.md
@@ -0,0 +1,46 @@
+# Terminus Wraith Plugin
+
+Wraith - A Terminus plugin to assist with visual regression testing of Pantheon site environments.
+
+## Usage:
+```
+$ terminus wraith [--sites site-name.test,site-name.prod --paths home=/,about=/about,news=/news,... --config --spider]
+```
+
+## Examples:
+Use the previous configuration or prompt for the environments and pages to compare and then generate snapshots:
+```
+$ terminus wraith
+```
+Prompt for the environments and pages to compare and then generate snapshots:
+```
+$ terminus wraith --config
+```
+Use the previous configuration or prompt for new pages to compare the my-site.test and my-site.prod environments and then generate snapshots:
+```
+$ terminus wraith --sites=my-site.test,my-site.prod
+```
+Use the previous configuration or prompt for new environments to compare the /, /about and /news pages and then generate snapshots:
+```
+$ terminus wraith --pages=home=/,about=/about,news=/news
+```
+Use the previous configuration or prompt for new environments, craw for pages and then generate snapshots:
+```
+$ terminus wraith --spider
+```
+
+## Installation:
+
+For installation help, see [Extend with Plugins](https://pantheon.io/docs/terminus/plugins/).
+
+```
+mkdir -p ~/.terminus/plugins
+composer create-project -d ~/.terminus/plugins terminus-plugin-project/terminus-wraith-plugin:~1
+```
+
+## Configuration:
+
+Install [Wraith](http://bbc-news.github.io/wraith/) for your [operating system](http://bbc-news.github.io/wraith/os-install.html).  See [http://bbc-news.github.io/wraith/os-install.html](http://bbc-news.github.io/wraith/os-install.html).
+
+## Help:
+Run `terminus help wraith` for help.
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..93efea4
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,37 @@
+{
+    "name": "terminus-plugin-project/terminus-wraith-plugin",
+    "description": "Wraith - A Terminus plugin to assist with visual regression testing of Pantheon site environments.",
+    "homepage": "https://github.com/terminus-plugin-project/terminus-wraith-plugin",
+    "authors": [
+        {
+            "name": "Ed Reel",
+            "email": "edreel@gmail.com",
+            "homepage": "https://github.com/uberhacker",
+            "role": "Developer"
+        }
+    ],
+    "type": "terminus-plugin",
+    "keywords": [
+        "pantheon",
+        "terminus",
+        "regression",
+        "testing",
+        "wraith",
+        "plugin"
+    ],
+    "support": {
+        "issues": "https://github.com/terminus-plugin-project/terminus-wraith-plugin/issues"
+    },
+    "license": "MIT",
+    "require": {
+        "php": "^5.5 || ^7.0"
+    },
+    "autoload": {
+        "psr-4": { "TerminusPluginProject\\TerminusWraith\\": "src" }
+    },
+    "extra": {
+        "terminus": {
+            "compatible-version": "^1"
+        }
+    }
+}
diff --git a/src/Commands/WraithCommand.php b/src/Commands/WraithCommand.php
new file mode 100644
index 0000000..c8371e5
--- /dev/null
+++ b/src/Commands/WraithCommand.php
@@ -0,0 +1,217 @@
+<?php
+
+namespace TerminusPluginProject\TerminusWraith\Commands;
+
+use Pantheon\Terminus\Commands\TerminusCommand;
+use Pantheon\Terminus\Exceptions\TerminusException;
+use Pantheon\Terminus\Site\SiteAwareInterface;
+use Pantheon\Terminus\Site\SiteAwareTrait;
+use Symfony\Component\Yaml\Yaml;
+
+/**
+ * Assist with visual regression testing of Pantheon site environments.
+ */
+class WraithCommand extends TerminusCommand implements SiteAwareInterface
+{
+
+    use SiteAwareTrait;
+
+    /**
+     * Visual regression testing with Wraith.
+     *
+     * @authorize
+     *
+     * @command wraith
+     *
+     * @option array $sites A comma separated list of site environments to compare in `site-name.env` format. Example: my-site.test,my-site.prod
+     * @option array $paths A comma separated list of name=value relative paths to compare. Example: home=/,about=/about,news=/news,etc.
+     * @option bool $config Enable configuration mode
+     * @option bool $spider Craw to detect pages
+     *
+     * @usage [--sites site-name.test,site-name.prod --paths home=/,about=/about,news=/news,... --config --spider]
+     *     Generate snapshots to visually compare various pages of different site environments.
+     */
+    public function wraith($options = ['sites' => [], 'paths' => [], 'config' => false, 'spider' => false]) {
+
+        $this->checkRequirements();
+
+        // Determine if capture configuration exists.
+        $capture_file = __DIR__ . '/configs/capture.yaml';
+        if (!file_exists($capture_file)) {
+            $options['config'] = true;
+            exec('wraith setup', $messages, $return_var);
+            if (!empty($messages)) {
+                foreach ($messages as $message) {
+                    $this->io()->writeln($message);
+                }
+            }
+        }
+
+        // Override --config option if --no-interaction is set.
+        if ($options['no-interaction']) {
+            $options['config'] = false;
+        }
+
+        // Configuration requested.
+        if ($options['config']) {
+            // Extract capture data.
+            $capture_data = $this->getYaml($capture_file);
+
+            // Get the sites to compare.
+            if (empty($options['sites'])) {
+                $creds = array();
+                $site_envs = array();
+                $site_envs[] = $this->io()->ask('Enter the source in `site-name.env` format');
+                $login = $this->io()->confirm('Does this environment require a login?');
+                if (!$login) {
+                    $creds[$site_envs[0]] = '';
+                } else {
+                    $user = $this->io()->ask('Enter the username');
+                    $pass = $this->io()->askHidden('Enter the password');
+                    $creds[$site_envs[0]] = "${user}:${pass}@";
+                }
+                $site_envs[] = $this->io()->ask('Enter the target in `site-name.env` format');
+                $login = $this->io()->confirm('Does this environment require a login?');
+                if (!$login) {
+                    $creds[$site_envs[1]] = '';
+                } else {
+                    $user = $this->io()->ask('Enter the username');
+                    $pass = $this->io()->askHidden('Enter the password');
+                    $creds[$site_envs[1]] = "${user}:${pass}@";
+                }
+            } else {
+                $site_envs = explode(',', $options['sites'][0]);
+            }
+
+            // Get the site domains.
+            $domains = array();
+            foreach ($site_envs as $site_env) {
+                list(, $env) = $this->getSiteEnv($site_env);
+                $domain_info = $env->getDomains()->serialize();
+                foreach ($domain_info as $info) {
+                    $domains[$info['environment']] = 'http://' . $creds[$site_env] . $info['domain'];
+                }
+            }
+            $capture_data['domains'] = $domains;
+
+            // Get the site paths.
+            if (!$options['spider']) {
+                $paths = array();
+                if (empty($options['paths'])) {
+                    $path = $options['yes'] ? '' : '/';
+                    while ($path) {
+                        if ($name = $this->io()->ask('Enter the name for a relative path or `0` to cancel', 0)) {
+                            if ($path = $this->io()->ask('Enter the url of the relative path or `0` to cancel', 0)) {
+                                $paths[$name] = $path;
+                            }
+                        } else {
+                            $path = 0;
+                        }
+                    }
+                    // Need at least one page to compare.
+                    if (empty($paths)) {
+                        $paths['home'] = '/';
+                    }
+                } else {
+                    $pairs = explode(',', $options['paths'][0]);
+                    foreach ($pairs as $pair) {
+                        $values = explode('=', $pair);
+                        $paths[$values[0]] = $values[1];
+                    }
+                }
+                if (isset($capture_data['imports'])) {
+                    unset($capture_data['imports']);
+                }
+                $capture_data['paths'] = $paths;
+            }
+
+            // Output the new configuration.
+            $this->putYaml($capture_file, $capture_data);
+        }
+
+        // Craw to detect pages.
+        if ($options['spider']) {
+            $capture_data = $this->getYaml($capture_file);
+            if (isset($capture_data['paths'])) {
+                unset($capture_data['paths']);
+            }
+            $capture_data['imports'] = 'spider_paths.yaml';
+            $this->putYaml($capture_file, $capture_data);
+            exec('wraith spider ' . $capture_file, $messages, $return_var);
+            if (!empty($messages)) {
+                foreach ($messages as $message) {
+                    $this->io()->writeln($message);
+                }
+            }
+        }
+
+        // Generate snapshots.
+        exec('wraith capture ' . $capture_file, $messages, $return_var);
+        if (!empty($messages)) {
+            foreach ($messages as $message) {
+                $this->io()->writeln($message);
+            }
+        }
+
+    }
+
+    /**
+     * Platform independent check whether a command exists.
+     *
+     * @param string $command Command to check
+     * @return bool True if exists, false otherwise
+     */
+    protected function commandExists($command)
+    {
+        $windows = (php_uname('s') == 'Windows NT');
+        $test_command = $windows ? 'where' : 'command -v';
+        $file = popen("$test_command $command", 'r');
+        $result = fgets($file, 255);
+        return $windows ? !preg_match('#Could not find files#', $result) : !empty($result);
+    }
+
+    /**
+     * Check for plugin requirements.
+     */
+    protected function checkRequirements()
+    {
+        if (!$this->commandExists('wraith')) {
+            $message = 'Please install Wraith to enable visual regression testing.  See http://bbc-news.github.io/wraith/os-install.html.';
+            throw new TerminusNotFoundException($message);
+        }
+    }
+
+    /**
+     * Extract YAML data.
+     *
+     * @param string $yaml_file The YAML file
+     * @return array An array of YAML compatible data
+     */
+    protected function getYaml($yaml_file)
+    {
+        if ($yaml_data = @file_get_contents($yaml_file)) {
+            return Yaml::parse($yaml_data);
+        }
+        return array();
+    }
+
+    /**
+     * Save YAML data.
+     *
+     * @param string $yaml_file The YAML file
+     * @param array $yaml_data An array of YAML compatible data
+     */
+    protected function putYaml($yaml_file, $yaml_data)
+    {
+        if (!$yaml_formatted_data = Yaml::dump($yaml_data)) {
+            throw new TerminusNotFoundException('Unable to save configuration.  Invalid YAML data.');
+        }
+        try {
+            $handle = fopen($yaml_file, 'w');
+            fwrite($handle, $yaml_formatted_data);
+            fclose($handle);
+        } catch (Exception $e) {
+            throw new TerminusNotFoundException($e->getMessage());
+        }
+    }
+}