build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.0'
        classpath 'me.tatarka:gradle-retrolambda:3.2.5'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
        classpath "com.jakewharton:butterknife-gradle-plugin:8.4.0"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        mavenCentral()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

// Define versions in a single place
ext {
    // Sdk and tools
    minSdkVersion = 14
    targetSdkVersion = 24
    compileSdkVersion = 24
    buildToolsVersion = '24.0.2'

    // App dependencies
    supportLibraryVersion = '24.2.1'
    jUnitVersion = '4.12'
    daggerVersion = '2.6'
    rxAndroidVersion = '1.2.1'
    rxJavaVersion = '1.1.6'
    retorifitVersion = '2.1.0'
    okhttpVersion = '3.4.1'
    butterknifeVersion = '8.4.0'
}