Remove inaccurate XCode copyright claim from UIView+AutoLayout.m 

See https://github.com/jrturton/UIView-Autolayout/issues/15 for details
Remove inaccurate XCode copyright claim from UIView+AutoLayout.h

See https://github.com/jrturton/UIView-Autolayout/issues/15 for details
Merge pull request #16 from cschneid/master

Remove contradictory license information from headers of Files.