Address possible permission issues in docs
Address possible permission issues in docs

Recently it seems like google has started checking for duplicate permissions in the play store. resulting in some issues when uploading:

https://stackoverflow.com/questions/44299197/google-play-apk-upload-error-duplicate-declarations-of-permission

Add some documentation to state that RxAndroidBle handles permissions for you and how to handle it if you need ACCESS_COARSE_LOCATION on versions < 23
Polidea/RxAndroidBle,Polidea/RxAndroidBle,Polidea/RxAndroidBle