Merge pull request #2 from ehenneken/master

refactoring of app
Small refactor
Merge pull request #3 from ehenneken/crunch

Small refactor
added client token
Merge pull request #4 from ehenneken/access_token

added client token
graphics data is now served from '/' rather than '/graphics'
Merge pull request #5 from ehenneken/endpoint_update

graphics data is now served from '/' rather than '/graphics'
removed example routes
Merge pull request #6 from ehenneken/remove_examples

removed example routes
Implemented Flask-SQLAlchemy
Merge pull request #7 from ehenneken/flask_alchemy

Implemented Flask-SQLAlchemy
updated requirements.txt