Update to RxJava 1.1.5 to get filter() bugfix
Update to RxJava 1.1.5 to get filter() bugfix

RE: ReactiveX/RxJava#3912

Signed-off-by: Eddie Ringle <bacc1c505cb1756c59242c0a8ee25cd990a210e9@ringle.io>

MaTriXy/RxAndroid,PibeDx/RxAndroid,ReactiveX/RxAndroid,PibeDx/RxAndroid,MaTriXy/RxAndroid