Fixes #80: Added Travis CI and tests

[idealadarsh]

Fixes https://github.com/fossasia/flappy-svg/issues/80

• [x] Add travis.ci to the github services (Don't have admin access, please do it admins)
• [x] add a travis file, in it:
  • [x] install phantomjs
  • [x] install node to write the tests
  • [x] install modules
  • [x] run tests
• [x] implement tests
  • [x] sites are reachable from eachother (index, links, credits, ...)
  • [x] no resources are loaded from the internet

[niccokunzmann]

Thanks, looks like travis is running. Can you create an issue with some explanation of what needs to be done to make travis green again?

[idealadarsh]

Yeah sure! Thanks :-)