Update target iOS.
Fix warning "Applications are expected to have a root view controller at the end of application launch"

Reference
http://stackoverflow.com/questions/7520971/applications-are-expected-to-have-a-root-view-controller-at-the-end-of-applicati
Change to application: didFinishLaunchingWithOptions:  Delete blank lines.
Delete explicit synthesize.
Prepare to convert to ARC. In Xcode select "Convert to ARC", it fails. Delete dealloc methods that show errors.
Prepare to convert to ARC. In Xcode select "Convert to ARC", it fails. Fix error "requires a bridged cast".

Reference
http://stackoverflow.com/questions/11703923/cfurlref-requires-a-bridged-cast-error
Prepare for convert to ARC. Delete dealloc.
Use Xcode project refactor to Convert to ARC.