Merge pull request #2 from skyfish81/bugfix

authentication_request_token is not supported, change to .request_token
Add layout
Update index error erb
Add notebooks action
Add notebooks erb
Add buttons for notebooks
Fix /notebooks
Extract into views
Use views/notebooks to make it RESTful
Add reloader and pry for dev env
Add notebooks new and create
Add notebooks edit/update/delete
Update layout js to make selected nav active
Refactor and fix notesbook part
Add notes index
Add notes new and create
Add notes edit and update
Add notes show, use enml-js to render enml
Add note delete
Fix get_note_content and bugs in page