Add vagrant configuration

Add Vagrantfile and .vagrant-provisioning/ to initialize VM with all
require server tools. Use Ubuntu 12.04 x86 (precise32) ans install :
* nodejs 0.10.25
* sails 0.9.16 - via npm
* nodemon - via npm
* mysql-server 5.5.38

The `vagrant up` command call .vagrant-provisioning/bootstrap.sh to
install server tools.
You can run manually .vagrant-provisioning/application-bootstrap.sh to
initialize application requirements.

	modified:   package.json
	.vagrant-provisioning/
	.vagrant/
	Vagrantfile