Cleaning up the UI and adding some badges to the README

* removed add share buttom from the UI because it was not working and could create an invalid share which would break the daemon. (This button could be added back in the future)
* applied lint tools to the haml and javascript
* moveed the onclick javascript out of the HTML and into the script files

@nesquena I have added the Inch CI badge and if you would like to the webhook to the project then it should start updating automatically. http://inch-ci.org/howto/webhook
I have also added coveralls report and badge. It seems to be working, but I am not sure if anything will need to be registered to make it work.