Add 'Vagrant vs Other Software' section to docs navigation
Add 'Vagrant vs Other Software' section to docs navigation

mitchellh/vagrant,chrisroberts/vagrant,chrisroberts/vagrant,mitchellh/vagrant,chrisroberts/vagrant,sni/vagrant,mitchellh/vagrant,chrisroberts/vagrant,sni/vagrant,sni/vagrant,sni/vagrant,mitchellh/vagrant