Add PCKMethodRedirector.m to Compile Sources build phase of UIKit+PivotalSpecHelper-StaticLib target
Merge pull request #103 from wileykestner/master

Add PCKMethodRedirector.m to Compile Sources of SpecHelper (reviewed by @akitchen)
Sketch of -[NSArray reduce:]
Sketch more of -[NSArray reduce:], -[NSArray map:]
Add Maybe and Error Monads, declare PCKReducible Protocol
Adjust monad interfaces
Add PCKCompletionHandler