Setup a VM Dev environment using Vagrant and Virtual Box

This pull request includes updates to setup an Ubuntu 14.04 VM as a development environment for Jekyll and Github-pages.
With the addition of the Vagrant file to the repo, this additional shared folder isn't necessary. It may even  cause a vagrant error when running vagrant up if the path doesn't exist. Let's remove it for now, the standard share of the directory the Vagrant file resides in should suffice (it is shared in the VM as /vagrant).