build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
apply plugin: 'com.github.ben-manes.versions'
apply plugin: 'com.commit451.updatewrapper'
buildscript {
    ext.kotlinVersion = '1.1.1'
    repositories {
        jcenter()
        maven { url "https://jitpack.io" }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
        //check with ./gradlew dependencyUpdates
        classpath 'com.github.ben-manes:gradle-versions-plugin:0.14.0'
        classpath 'com.github.Commit451:updatewrapper:1.1.1'
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url "https://jitpack.io" }
    }
}

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