RxPermissions – is a library that allows the usage of RxJava with the new Android M permission model.
ProGuard rules for RxPermissions
ProGuard can, for example, analyze the transitive dependencies in your code and remove unused elements. ProGuard writes out class files named 'a.class', 'b.class', etc. in the obfuscation phase. To fix errors use the next rules in configuration file.
# RxPermissions -dontwarn com.tbruyelle.rxpermissions.**
For more information about RxPermissions please see the website.