Merge pull request #45 from ReadmeCritic/master

Correct the spelling of CocoaPods in README

Update MPGNotification.podspec

minor; set `self.frame` in resizing

update `.podspec`

update pod version to point to new code

more options for Notification display & better handling of Xcode 6 bu…

…ild flags

minor iOS 6 bug fixes

add dismiss handler block & update demo to support the new API

initial release