readme mentions that vagrant up can read from gusteau.yml
improving readme section about the gusteau vagrant plugin's interaction with .gusteau.yml
Merge pull request #35 from nicholasf/master

readme mentions that vagrant up can read from gusteau.yml
Fix README typo
Pass active node name into ENV for hook commands
Merge pull request #36 from anicholson/pass_node_to_environment

Pass active node name into ENV for hook commands