Added react-native new-library command

Libraries/Sample/Sample.android.js

@@ -0,0 +1,17 @@
+/**
+ * Stub of Sample for Android.
+ *
+ * @providesModule Sample
+ * @flow
+ */
+'use strict';
+
+var warning = require('warning');
+
+var Sample = {
+  test: function() {
+    warning("Not yet implemented for Android.");
+  }
+};
+
+module.exports = Sample;