Document how to specify explicit version of box
Document how to specify explicit version of box

I needed this....
sni/vagrant,gitebra/vagrant,bryson/vagrant,jtopper/vagrant,signed8bit/vagrant,bryson/vagrant,benizi/vagrant,sax/vagrant,chrisroberts/vagrant,vamegh/vagrant,justincampbell/vagrant,justincampbell/vagrant,gitebra/vagrant,bryson/vagrant,taliesins/vagrant,benh57/vagrant,PatrickLang/vagrant,lonniev/vagrant,vamegh/vagrant,crashlytics/vagrant,taliesins/vagrant,carlosefr/vagrant,signed8bit/vagrant,jtopper/vagrant,vamegh/vagrant,bshurts/vagrant,kamazee/vagrant,bshurts/vagrant,krig/vagrant,crashlytics/vagrant,krig/vagrant,chrisroberts/vagrant,benh57/vagrant,carlosefr/vagrant,benizi/vagrant,marxarelli/vagrant,taliesins/vagrant,chrisroberts/vagrant,crashlytics/vagrant,lukebakken/vagrant,gitebra/vagrant,mitchellh/vagrant,tomfanning/vagrant,marxarelli/vagrant,carlosefr/vagrant,bdwyertech/vagrant,signed8bit/vagrant,benizi/vagrant,bdwyertech/vagrant,taliesins/vagrant,lukebakken/vagrant,benh57/vagrant,signed8bit/vagrant,sni/vagrant,chrisroberts/vagrant,PatrickLang/vagrant,sni/vagrant,mwrock/vagrant,mwrock/vagrant,justincampbell/vagrant,mitchellh/vagrant,crashlytics/vagrant,tomfanning/vagrant,gitebra/vagrant,bdwyertech/vagrant,marxarelli/vagrant,marxarelli/vagrant,lonniev/vagrant,benh57/vagrant,lonniev/vagrant,carlosefr/vagrant,bdwyertech/vagrant,lukebakken/vagrant,jtopper/vagrant,sax/vagrant,tomfanning/vagrant,sax/vagrant,PatrickLang/vagrant,justincampbell/vagrant,sax/vagrant,PatrickLang/vagrant,kamazee/vagrant,mitchellh/vagrant,krig/vagrant,mwrock/vagrant,benizi/vagrant,sni/vagrant,lukebakken/vagrant,tomfanning/vagrant,lonniev/vagrant,bryson/vagrant,vamegh/vagrant,kamazee/vagrant,mitchellh/vagrant,mwrock/vagrant,bshurts/vagrant,jtopper/vagrant,bshurts/vagrant,kamazee/vagrant,krig/vagrant