Add: Vagrantfile for easy environment setup

Running and manually testing features of pyperf requires an actual
environment to run in with some third-party services. Likewise,
testing the profilers planned for LXC and ZeroVM will not be possible
except in an environment where these systems are already installed.

Signed-off-by: Kevin Conway <kevinjacobconway@gmail.com>
Merge pull request #16 from kevinconway/vagrant

Add: Vagrantfile for easy environment setup