Merge pull request #9 from ysb33r/master

FIXED #2: Fixed it so that 'java-base' instead of 'java' plugin is applied

README.md

@@ -31,14 +31,16 @@ apply plugin: 'com.github.jrubygradle.jar'
 
 This loads the following plugins if they are not already loaded:
 + `com.github.jrubygradle.base`
-+ `java`
++ `java-base`
 
 ## Using the plugin
 
 This plugin does not add any new tasks or extensions, extends the `Jar` task type with a `jruby` closure. If the `java` plugin
 is loaded, then the `jar` task can also be configured.
 
 ```groovy
+apply plugin: 'java'
+
 jar {
  jruby {
  
@@ -105,7 +107,7 @@ buildscript {
 
 apply plugin: 'com.github.jrubygradle.jar'
 apply plugin: 'com.github.johnrengelman.shadow'
-
+apply plugin: 'java'
 ```
 
 ### Configuring Shadow JAR

src/main/groovy/com/github/jrubygradle/jar/JRubyJarPlugin.groovy

@@ -20,7 +20,7 @@ class JRubyJarPlugin implements Plugin<Project> {
  void apply(Project project) {
 
  project.apply plugin : 'com.github.jruby-gradle.base'
- project.apply plugin : 'java'
+ project.apply plugin : 'java-base'
  project.configurations.maybeCreate('jrubyEmbeds')
  project.configurations.maybeCreate('jrubyJar')
 
@@ -57,12 +57,8 @@ class JRubyJarPlugin implements Plugin<Project> {
 
  }
 
- project.sourceSets {
- main {
- java {
- srcDir new File(project.buildDir,'generated/java')
- }
- }
+ project.sourceSets.matching { it.name == "main" } .all {
+ it.java.srcDir new File(project.buildDir,'generated/java')
  }
  }
  @PackageScope