Fix Xcode 5 warnings, and updating SocketRocket.
Merge pull request #71 from wlue/xcode5

Fix Xcode 5 warnings.
Don't try to add nil paths.
Merge pull request #72 from Spaceman-Labs/features/nil_store_url_redux

Don't try to add nil paths.
CocoaPods installation guide in README.

Fixes #60.
Merge pull request #77 from wlue/master

CocoaPods installation guide in README.