add codeschool scheme

Colors inspired by [Code School](https://www.codeschool.com/) Screenshots

![screen shot 2014-04-25 at 11 45 05 pm](https://cloud.githubusercontent.com/assets/3022496/2807901/9013a700-ccfd-11e3-9549-ce7f6b882cb9.png)
![screen shot 2014-04-25 at 11 44 57 pm](https://cloud.githubusercontent.com/assets/3022496/2807902/9013e422-ccfd-11e3-8246-ef8becb249b9.png)
![screen shot 2014-04-25 at 11 44 33 pm](https://cloud.githubusercontent.com/assets/3022496/2807903/90143eb8-ccfd-11e3-8694-e879b6a5ea9b.png)