Incompatibility with rxjava 1.1.0

[sarthakn7]

As AsyncOnSubscribe has been removed from rx-java version 1.1.0 we are getting ClassNotFound exception when running with that version. The usage needs to be replaced with SyncOnSubscribe.

[akarnokd]

Yes, the companion libraries haven't been updated. 1.1.0 has mainly API surface changes but no other funcional changes compared to 1.0.17 so if you can, go back to 1.0.17 for the time being.