add: Vagrantfile for running in VM

[dpezely]

Add Vagrantfile for running within a guest Virtual Machine.

• Initially this is a draft PR because of issue #18
• This updates Node.js to latest stable because maintenance LTS and original versions produced many errors and warnings
• Additional instructions for Linux that puts user in more groups does NOT work within a Dockerfile
• Instructions are kept within the Vagrantfile as comments to avoid polluting README, etc.
• See also draft PR for Dockerfile for running within a container