build.gradle

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'
    }
}

allprojects {
    repositories {
        jcenter {
            url "http://jcenter.bintray.com/"
        }
        maven {
            url "https://maven.google.com"
        }
        maven {
            url "https://jitpack.io"
        }
        maven {
            url 'http://oss.jfrog.org/artifactory/oss-snapshot-local/'
        }
    }
}

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