Updated Gradle version to 1.0.0 for official Android Studio release.

build.gradle

@@ -3,7 +3,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.0.0-rc4'
+        classpath 'com.android.tools.build:gradle:1.0.0'
         classpath 'com.novoda:bintray-release:0.2.5'
     }
 }