Merge pull request #84 from TessMyers/develop

Adds documentation to railroad.directive, begins inserting components library
(fix) fixes small issue with order of dom elements
(feat) added word boundaries to workspace library and tests for them
(fix) fixes editText to add new letters at correct location
(feat) editText handles empty inputs and modifyTree specs tests for it
(doc) documentation/comments for modify tree factory
Merge pull request #85 from darkstar21/develop

couple small bug fixes and some documentation
adds nodeToAdd model to main scope
adds images for component library to workspace.directive
adds in drag-to-RR functionality(mocked in) and refactors DnD inside railroad-diagram. Very close to final functionality
adds in a few bug warnings