initial commit

build.gradle

@@ -3,9 +3,10 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.1.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -17,6 +18,7 @@ allprojects {
         jcenter()
         maven { url 'https://jitpack.io' }
         maven { url "https://maven.google.com" }
+        google()
     }
 }