Updated to build tools 3.0.0. Refactor of sample app to reduce duplicated code and styling.
diff --git a/build.gradle b/build.gradle
index 9b7a19c..6db2e7b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,8 +3,9 @@
     repositories {
         mavenCentral()
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.3'
+        classpath 'com.android.tools.build:gradle:3.0.0'
     }
 }