Merge pull request #82 from hryanjones/master

Uniquely colorize hostname based on a hash`
Don't clobber customizations when an update is made to config.py
upstream.
Create a config.py rather than having people do it manually.
Merge pull request #83 from unn/master

Don't clobber customizations when an update is made to config.py
Fix ImportError for config
Merge pull request #86 from tomislater/patch-1

Fix ImportError for config
Merge https://github.com/milkbikis/powerline-shell