build.gradle

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

buildscript {

    ext.kotlin_version = '1.1.2-4'
    ext.anko_version = '0.10.1'
    ext.support_version = '26.0.1'
    ext.arch_version = '1.0.0-alpha8'
    ext.realm_version = '3.5.0'

    repositories {
        maven { url 'https://maven.google.com' }
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0-alpha9'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "io.realm:realm-gradle-plugin:$realm_version"
    }
}

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

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