A lot of improvements. Read the extended.

• Rotation.
• Positioning.
• Positioning when rotating.
• Moved the logic found in resignActive and willEnterForeground inside
the class. You can remove it from your App Delegate.
• Fixed a couple of bugs.
Merge branch 'master' of https://github.com/rolandleth/LTHPasscodeViewController

Conflicts:
	README.md