Bumped expiry date to 1 May 2015.

briar-android/src/org/briarproject/android/SplashScreenActivity.java

@@ -30,8 +30,8 @@ public class SplashScreenActivity extends RoboSplashActivity {
 	private static final Logger LOG =
 			Logger.getLogger(SplashScreenActivity.class.getName());
 
-	// This build expires on 1 April 2015
-	private static final long EXPIRY_DATE = 1427846400 * 1000L;
+	// This build expires on 1 May 2015
+	private static final long EXPIRY_DATE = 1430438400 * 1000L;
 
 	private long now = System.currentTimeMillis();