.debs-cache local folder (faster chef installs)
gitignore .debs-cache
Rename provision script.
Dev deployer install moved to a separate script.
Move some util methods to App.

- env vars reads
- restarts
- path resolution
Move deployer modules to a "deployers" submodule.
Running a command and getting its output possible now with the
output=True kwarg.
Sample node configs for Node.js and Python
Enable SSH forward for dev vagrant boxes.
Switch to the python module for test boxes.