Enable NFS for VBox dev machines
Configure precise box to use 1.5gb ram and 2 cpus
Add a similar projects section to README
Ensure curl is installed on dev machines since the precise dev box does not come with it
Begin to rework box packaging tasks
Finish ubuntu box "build abstraction"
Switch `arch` usage to `uname -m` on base ubuntu lxc template

Fixes #53
Remove quantal64 specific code for building base boxes
Add task for building precise 64 boxes

Closes #57
Add task for building raring 64 boxes

Closes #56
Update changelog
Add support for disabling puppet and / or chef installation when building base boxes
New boxes!
Add "require time" so that `Date.today` works on 1.9.3
Multiple example boxes
Update README
Fix port forwarding for example boxes
Update reference to lxc dev box
Add an Ubuntu raring box so we can test lxc 0.9

Looks like it is working fine, although there's room for improvement
since we can use the output of `lxc-ls --fancy' on 0.9 to get
container's ip, but should be enough to close #54
Lots of tweaks to development boxes