Feature-Swipe Gesture: implemented a swipe gesture

If the user now swipes right on the shape flip view, the shape flip
view will alternate between drawing a square and a circle.
Feature-Swipe Gesture: removed useless code

Removed code in the swipe: method in the ShapeFlipView.m class.
The code had no use.
Feature-Swipe Gesture: added a sweet flip animation
Release-1.0: bumped version number to 1.0
Merge branch 'release-1.0' into develop
Merge branch 'feature-swipe_gesture' into develop
Merge branch 'release-1.0'
Merge branch 'master' into develop