Fix v21 resource folder.

 -move v21 resource folder to res/values-v21.
 -Change target sdk to 21.

Change-Id: I2e987be7edc4afa87ea138c9b602c3208fa88511
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 2a8175a..80d6516 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -353,7 +353,7 @@
 
     </application>
 
-    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="19" />
+    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="21" />
 
     <uses-feature android:name="android.hardware.location.gps" android:required="false" />