Added ARC support for OpenInChromeController, modernized sample app a bit.

OpenInChrome: Removed an autorelease and added a CFBridgingRelease

Sample App: Changed some "retain" properties to "weak" for interface elements, removed unneeded synthesize calls, used OnInChromeController sharedInstance
Merge pull request #3 from ToddKerpelman/master

Added ARC support for OpenInChromeController, modernized sample app a bit