Change VM host name to vvv from precise32-dev

Per #105, vvv is more descriptive for the scope of our VM. This is a possible breaking change if any custom work was done on top of VVV as a scaffold, so we'll note that in the changelog as well.

Vagrantfile

@@ -24,7 +24,7 @@ Vagrant.configure("2") do |config|
   config.vm.box = "precise32"
   config.vm.box_url = "http://files.vagrantup.com/precise32.box"
 
-  config.vm.hostname = "precise32-dev"
+  config.vm.hostname = "vvv"
 
   # Default Box IP Address
   #