Add box_check.rb script to verify config
Add box_check.rb script to verify config

When entering configuration into vagrantcloud, there isn't an easy
way to verify that all the URLs were entered correctly.  This script
uses the vagrantcloud API and checks to make sure the urls are found.
This is very specific to the way that files are hosted with this
repo`

chrisvire/vagrant-sil,chrisvire/vagrant-sil