Merge pull request #32 from daithiocrualaoich/master

Add a pylucene intern.
Update RStudio version to fix launch error.
Add pandasql to pandas box.
New data visualisation box with GraphViz.
Update to Vagrant configuration version 2.
Rename rstudio to r as short hostname no longer a problem.
Rename postgres to postgresql
Update Puppet modules from Forge.
Use nodejs module to install node.
Add puppet repository to dev for easy puppet update.
Add Saiku box.