bump version to 77

Change-Id: Idda4ebd3ba24e0817746f4f4c59e2dc081b2507e

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="76"
-    android:versionName="20170501">
+    android:versionCode="77"
+    android:versionName="20170510">
 
     <supports-screens
         android:anyDensity="true"
@@ -254,4 +254,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
         </service>
     </application>
 
-</manifest>
\ No newline at end of file
+</manifest>