Update README.md

README.md

@@ -7,6 +7,8 @@ Do not use sensors modified with this app to make medical decisions. I am not re
 ## Installation
 To use this app, you'll have to build it yourself.
 
+[This guide](https://androidaps.readthedocs.io/en/latest/EN/Installing-AndroidAPS/Building-APK.html) from the AndroidAPS docs explains how to build an apk, the steps should be basically the same, just using this repository instead.
+
 You'll need the Android SDK installed and define the ANDROID_SDK_ROOT environment variable, after that, you can run gradlew to build the .apk file (it should probably be signed so you can install it).
 
 You can also install Android Studio and build it from there.