zapp/build.gradle

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

buildscript {
	repositories {
		jcenter()

		// for butterknive:
		mavenCentral()
	}
	dependencies {
		classpath 'com.android.tools.build:gradle:3.0.0'

		// NOTE: Do not place your application dependencies here; they belong
		// in the individual module build.gradle files
	}
}

allprojects {
	repositories {
		jcenter()

		// for MarkdownView
		maven { url "https://jitpack.io" }

		// google support libs
		maven { url "https://maven.google.com" }
	}
}

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