more server side files: mongodb related
Basic html landing page
Merge pull request #20 from ryojiosawa/feat/signup

Add .travis.yml
Merge pull request #18 from suprbh/master

Add more server-side files: mongodb related
Merge pull request #21 from ceg1236/master

Add client folder with basic html landing page
Remove 0.6 and 0.8 versions from .travis.yml and add email notifications