Fixing build status image for travis ci

image now retina ready!
Merge pull request #58 from haaakon/patch-1

Fixing build status image for travis ci
Fix typo in README.
Merge pull request #60 from nickcheng/typofix

Fix typo in README.
Initial equalTo() autoboxing implementation
Default to prefixed auto-boxing macros, cleanup constraint implementations
Added back public MASConstraint constant setters, cleanup
Added doc comments for new stuff
Added tests for equalTo NSValue arguments and autoboxing
Updated example with autoboxed equalTo usage
Added mas_remakeConstraints
Added MASConstraint private header
Added tests for maker.removeExisting
Merge pull request #63 from nickynick/remake-constraints

Added mas_remakeConstraints
Unprefix _equalToWithRelation and _valueOffset
Added an actual implementation for mas_ relation methods
Merge pull request #62 from nickynick/equalTo-autoboxing

Autoboxing for scalar/struct attribute values
Update -[MASViewConstraint layoutConstraintSimilarTo:] to check relation (and fix spelling).
Merge pull request #65 from Rolken/master

Update -[MASViewConstraint layoutConstraintSimilarTo:] to check relation (and fix spelling).
add ability to chain different view attributes