Initial version of nos-dock

This implementation contains NosDock to handle dock and intellihide behaviors and NosDash containing favorite and running apps list. I made it heavily influenced by Michele's Dash to Dock extension (https://github.com/micheleg/dash-to-dock).

![initial version](https://cloud.githubusercontent.com/assets/749098/2646924/941f1bc0-bf44-11e3-8368-73526fee9056.png)
![showing overview](https://cloud.githubusercontent.com/assets/749098/2646925/941f937a-bf44-11e3-87c8-8e459ec4c822.png)