Make the library work well with RN 0.29+ on Android and add support for multiple event handlers and multiple sockets

[saalihou]

Fixed incompatible methods Fixed dex multiple defines error due to old socketio java client version Added support for multiple event handlers on the same event Added support for path option in Android Added support for multiple sockets on Android

I unfortunately do not have enough iOS/Swift knowledge to make checks on the iOS side (+ I do not own a MAC :D). If anyone is willing to look into it, otherwise I will have a colleague help me out on it soon.