Update Android build to latest gradle plugin

android/build.gradle

@@ -11,9 +11,11 @@ def pEpEngineDB = new File(new File(pEpEngineSrc), 'db')
 buildscript {
     repositories {
         jcenter()
+        maven {url 'https://maven.google.com'}
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.0'
+        classpath 'com.android.tools.build:gradle:3.0.0-alpha8'
+        //classpath 'com.android.tools.build:gradle:2.2.0'
     }
 }