Appearance improved and UIKit Dynamics added.

Appearance was improved in placeTextFields: with color and less
stripes. Added PanGestureRecognizer that uses UIDynamics and
UIAttachmentBehavior to make view snapback or fall off the screen when
panned. Fade-out is reverse of fade-in. firstResponder should be a
TextField. Different keyboards per question.
Merge pull request #1 from davidolesch/dev

Appearance improved and UIKit Dynamics added.