constrainToSize: now returns the constraints that it applied
changed the return type on common methods to NSLayoutConstraint or NSArray objects containing the newly applied constraints
Updated podspec to 0.0.3
Updated README
Merge pull request #5 from liamnichols/master

Updated return types on common methods
Fixed copy issue on NSLayoutConstraints
Updated podspec to 0.0.4
Merge pull request #6 from liamnichols/master

Removed copy from NSLayoutConstraint return types
Update README.md
Added pinEdges:toSameEdgesOfView: to save calling pinEdge:toEdge:ofView: mutliple times when using the same edge. Reuses the enum for edges.
Changed comments to match others (second method with inset parameter)
Added new methods to readme
Incremented podspec version to 0.0.5
Merge pull request #8 from rhodgkins/master

Added pinEdges:toSameEdgesOfView:
Merging demo project