Adding in node_modules to gitignore
Updates #1: Observations on property changes

- Implementation of observerMap
- Implementation of stubs on PipePlugin
- Added additional observer tests
- Added additional plugin test to reflect working observers
- Added unit tests for configureObserverMap / registerObservers
Merge branch 'refs/heads/master' into wip
- Call register observers on init
Updated read me
Updates #1: 	Observations on property changes

- ArrayPipeline triggers _recalculate on FirstResponder for observation change
- PipePlugin implements _recalculate
- Additional core method tests
Updates #1: 	Observations on property changes

- Modified arrayPipeline to include a facility for obtaining previous results from a PipePlugin
- Implemented primitive observer handling
- Implemented result caching for PipePlugin
- More tests
Add in a (semi-crummy) example of how to use the pipeline
Adding in content array change observer
Updated README with current progress
Merge branch 'master' of github.com:Mochaleaf/ArrayPipeline