Merge pull request #33 from pablosca/master

Refuels by car
updated contributors into README
added Refuels.OneCar.js into index.html
updated version of ionic to beta.13 into bower.json
updated ionic version to beta.13 close#28
fix error in README xD
added procfile for heroku, express as a dependency, and heroku task to gulpfile closes #34
added repository field to package.json
added Procfile for heroku
modified Procfile for heroku
ready to deploy to heroku
web.js for heroku
make factories named uppercase
Take Picture for Cars closes #32