Update docs to use quotes around terms
Update docs to use quotes around terms

chrisroberts/vagrant,gitebra/vagrant,gitebra/vagrant,marxarelli/vagrant,sni/vagrant,chrisroberts/vagrant,chrisroberts/vagrant,chrisroberts/vagrant,sni/vagrant,gitebra/vagrant,sni/vagrant,marxarelli/vagrant,marxarelli/vagrant,mitchellh/vagrant,gitebra/vagrant,mitchellh/vagrant,sni/vagrant,mitchellh/vagrant,mitchellh/vagrant,marxarelli/vagrant