packaging: bump version

Change-Id: I4be5840611c72dbb65df0e4c20b115b070c6e528

ring-android/app/src/main/AndroidManifest.xml

@@ -20,8 +20,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="cx.ring"
     android:installLocation="auto"
-    android:versionCode="51"
-    android:versionName="20160815">
+    android:versionCode="52"
+    android:versionName="20160816">
 
     <uses-sdk
         android:minSdkVersion="16"