Add factory_girl_rails
Note title is an H2
Add 'Edit' button on Note #show
Initial code block styling. Will clean up when syntax highlighting is added.
Use Factories and  for ApplicationController specs
Refactor new note tag creation
Re-write NotesController#create. Add NoteHandler module and spec
Re-write NotesController specs w factories and RSpec 'let' method
Added specs for scenarios where add_tags is called with some or all empty string params