Update README.md

Author: d4rken

README.md

@@ -3,6 +3,8 @@ First release Mar 19, 2011 :)
 
 This app allows you to manually aquire different types of [wakelocks](https://developer.android.com/reference/android/os/PowerManager.WakeLock.html) on Android.
 
+A modern version (by a few years) is available here: [Wakelock - Revamp](https://github.com/d4rken/wakelock-revamp).
+
 ## Download
 * [Google Play](https://play.google.com/store/apps/details?id=eu.thedarken.wl)
 * [GitHub](https://github.com/d4rken/wakelock/releases/latest)