Added Gradle build files because Ant's too efficient for some people.

build.gradle

@@ -0,0 +1,9 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.12.+'
+    }
+}