React Native 0.29+ compatibility

[awinogrodzki]

There is some issues with Socket.swift file which is deprecated with the newest version of RN and Swift, this sometimes causes crashes in development environment and prevents smooth debugging. Also I had many issues to install the libraries with Xcode. Maybe it's a good idea to use RNPM library to link it automatically?

[kitolog]

How did you solve the issues in Socket.swift?

[kitolog]

I got ...react-native-socketio/ios/RNSwiftSocketIO/Socket.swift:67:21: Method 'eventDispatcher' was used as a property; add () to call it

[saalihou]

I made a PR that makes this library compatible with RN 0.29+ plus some other things like multiple event handlers/socket support: #46
Hope it lands.