adds editable text selectability, restricts to literal nodes
changes color scheme
Merge pull request #72 from TessMyers/develop

changes color scheme
(test) tests adding a literal to a capture group
(test) tests adding literals inside of quantifieds
(test) tests adding nodes to charsets
(refactor) changed tree names in addNode tests
Merge pull request #73 from darkstar21/develop

More unit tests for addNode
adds informativeText model, removes makeRRModule from general scope and injects into railroad.dir
removes the informativeText directive, rpelaces with simple expression
removes textEdit box when user clicks off the element
Merge pull request #74 from TessMyers/develop

removes textEdit box when user clicks off the element
Added skeleton for editText method
 Can edit text on matches and quantifieds
Fixed modifying a literal in match