edan2 themes

## edan

Inspired by idan, a functional, uncluttered fish theme with usability perks for git users and python developers.

![Screenshot of edan theme](https://cloud.githubusercontent.com/assets/215282/2869575/7bd3f828-d278-11e3-91ce-7ff84a5ea1b0.png)


#### Characteristics

##### Left Prompt

* Current python virtualenv (if applicable)
* Truncated CWD (just the current folder name)
* Git branch and dirty state (if applicable)

##### Right Prompt

* Full CWD path
* Last error code (if applicable)