I made some changes

Implemented

* nice, more clear design (try to use bourbon + neat)
* migrate to rails 4
* fixed broken dependency in Gemfile
* changed tabs to spaces and removed tailing spaces
* and other small things

![screen shot 2013-09-18 at 3 56 43 am](https://f.cloud.github.com/assets/26019/1160616/c3de7ac6-1fdb-11e3-9cee-81f39ddd8906.png)

Keep improving