Updated With Discardable Result

1.0.2

Added discardable result to methods

Constraint Manager

Added ConstraintManager and easier API interface for applying constraints.

Created Side Margin Layout Pinning

Releasing 0.1.2

- Support Margin Guide pinning

Removed target overrides the build setting warning

Removed warnings when running example project

Initial Snap Layout Version

Snap Layout supports iOS >= 9.0 and Swift 2.3 in Xcode 8