Merge pull request #89 from xuzhe/master

fix a crash problem
Make a message tappable even though it is not dismissible

- Handling tap does not automatically cause fadeMeOut
- Always add UITapGestureRecognizer (which will have no effect if no callback defined)
Merge pull request #93 from srekke/always_tappable

Make a message tappable even though it is not dismissible
Fix message offset for nested controllers

This fixes the message offset when building with iOS 6 SDK and using nested controllers, e.g. a `UISplitViewController` and displaying the message on one of its children.
Merge pull request #96 from koraktor/patch-1

Fix message offset for nested controllers