Leave the CGContextRef as we found it

Avoid potential compounding transforms
Merge pull request #207 from jacobjennings/master

Leave the CGContextRef as we found it
Indenting code for CGContextSave/RestoreGState calls
[Issue #212] Preserve links when auto-resizing label
[Issue #211] Fixing display issue with strikethrough style when labels are not top-aligned
Added support for Auto Layout -intrinsicContentSize.
Corrected textInsets right inset to be an inset from right margin rather than the left margin which is default.
Fixed textInsets issue for iOS 5 as well.
Merge pull request #227 from daveverwer/textinsetfix

Fix for right margin bug with textInsets