Added selectionIndicatorYOffset property
Added support for UIEdgeInsets to selection indicator

• Removed the more basic Y offset property
Updated inset logic
Add support for custom box layer opacity.
Add support for multi-line labels on iOS 7+
Fixes issue #51
Merge branch 'master' of https://github.com/sergey-sportsetter/HMSegmentedControl into sergey-sportsetter-master

Conflicts:
	HMSegmentedControl/HMSegmentedControl.h
	HMSegmentedControl/HMSegmentedControl.m
Merge pull request #48 from alexandreos/multilinelabels

Add support for multi line labels on iOS 7+
Cleaning up.
Appends last commit.
Fixes selection indicator always appearing at bottom.
Update for navigation