setOnVisibilityChangeListener
Merge pull request #25 from Tuxilero/master

Created setOnVisibilityChangeListener
Fixed issue #27
Fixed issue #27
Added helper static methods that also take Resource IDs.
Made all the show methods return this for chaining. Added static create methods. Added methods that will allow you to use String resources.
Added sample to test the new string resource.
Forgot to add returning self to the setOn*Listener methods.
Merge pull request #28 from Nemisis/master

Methods return self for chaining. Added static create method. Added ability to use resources.