Added `organisation` config
Added example /etc/parcel.yaml
Have Travis build and install the deb
Fixed org config location
Travis boxes don't come with fpm (unsurprisingly!)
No need to `sudo gem`, just `gem`
Sigh, dpkg -i not -I (longopts for the clarity!)
Merge branch 'feature/travis-tests'
Merge branch 'master' into feature/organisation

Conflicts:
	src/Parcel/Config.hs
Add example organisation
Use organisation for package prefix
Ensure directory exists after install
Give `--organisation` example
Merge branch 'feature/organisation'