Vagrantfile: initial version with basic setup

Signed-off-by: Roger Meier <roger@bufferoverflow.ch>
Vagrantfile: setup db, recent node.js, forward 8081

Signed-off-by: Roger Meier <roger@bufferoverflow.ch>
packages.R: add shiny-gridster

Signed-off-by: Roger Meier <roger@bufferoverflow.ch>
add mailing list analysis dependencies for R

Signed-off-by: Roger Meier <roger@bufferoverflow.ch>
add missing dependencies
- Debian Package: graphviz
- R Packages: rjson, lsa

Signed-off-by: Roger Meier <roger@bufferoverflow.ch>
Merge pull request #2 from bufferoverflow/vagrant

Vagrantfile: initial version with basic setup