Change ubuntu box dockerfile to use an upstart enabled image (aka machine mode)
Yes we have machine mode!
People willing to use docker with vagrant are likely to be interested on machine containers, lets not worry about other use cases for now
Lower `docker stop` timeout to 10
Update gemspec
Decrease timeout for docker stop

We now use the graceful halt built in action and it should stop the
container successfully, if it doesn't, we can just kill it right away
Update vagrant-cachier
Add vagrant-cachier to example
Fix `vagrant reload`
Improve ubuntu box "cacheability" doing experiments
Install NFS client on base box / image
Support for privileged containers
Implement support for NFS and fix middleware logic / ordering
Grab docker bridge ip using /sbin/ip instead of hardcoding it on the driver
Copy & paste is evil