Viewdeck now always stays open after presenting a modal controller.

This was a problem with using a navigation controller and viewdeck in integrated navigation mode.

Fixes #253.
Amended Multiviewdeck example to test issue #253.

Set top viewdeckcontroller to use integrated navigation mode.
Added `IIViewDeckAllViewsPanning` panning mode to allow panning in the full view deck.

Aka, you can start the gesture over a side controller when the center view is open.

Fixes #244.
Disable userinteraction while center is animating (open, close)

Fixes #226.
Fixed possible UIHierarchyInconsistency problem.

This commit sponsored by #nsconf.
When using integrated navigation controller mode, the `viewDeckController` property returns the nearest viewdeck in the navigation stack.
Added 568h@2x default image so the examples work on iPhone5.
Make sure child controllers get delegate calls.
Cleaned up featuresExample.
Merge branch 'master' into develop
Make sure that viewDidLoad is called before any other appearance method.

Fixes #259.
Merge branch 'master' into develop
Updated VERSION and podspec.
Merge branch 'develop'