Update README.md

-Add relevant use cases
-Add links to Trello boards where relevant
-Add a bit of background to Mechanical MOOC in action
Merge pull request #4 from mozzadrella/patch-1

Update README.md
Dumping data
made some styling changes
changed overridden content
working on styling
added some html for better styling
changed overridden content
changed overridden content
Merge branch 'master' of https://github.com/ercchy/mechanical-mooc
Update top menu bar
point p2pu logo at p2pu
Add .travis.yml file
Merge branch 'master' into classgallery
Migration for twitter field
Resloved conflicts