Fixing version comparison to be forward thinking.

Adding a specific check for the deployment target to be equal to or greater than iOS 6, when minimumScaleFactor is available, in such a way to support deployment targets higher than 6.x.

Signed-off-by: Levi Brown <levi@grokers.net>
Merge pull request #34 from levigroker/master

Fixing version comparison to be forward thinking.