Merge pull request #11 from nezza/master

Seperate the chat-window logic from the application delegate
Add support for quit events
Add missing NSTextFieldDelegate protocol to MXIChatWindowController
Rename everything to Rainchat
Use Objective C gitignore from GitHub

This also adds Pods again, since CocoaPods actually recommends keeping them in the repo:
http://guides.cocoapods.org/using/using-cocoapods.html#should-i-ignore-the-pods-directory-in-source-control
Update Mantle to 1.5

Remove properties that do not exist from JSON key mapping because that is
an error in Mantle 1.5
Remove old workspace
Rename eid property to eventId
Change all fonts to Helvetica Neue Regular
Move event handlers into event classes

Thanks to @Zaba and @nezza for feedback
Remove safety block from debugging