Move all commands to the Vagrant::Command class. Document all commands.

lib/vagrant.rb

@@ -16,4 +16,4 @@ require 'vagrant/config'
 require 'vagrant/env'
 require 'vagrant/provisioning'
 require 'vagrant/ssh'
-require 'vagrant/vm'
+require 'vagrant/vm'

lib/vagrant/commands.rb

@@ -6,7 +6,7 @@ module Vagrant
   class Commands
     extend Vagrant::Util
 
-    class <<self
+    class << self
       # Initializes a directory for use with vagrant. This command copies an
       # initial `Vagrantfile` into the current working directory so you can
       # begin using vagrant. The configuration file contains some documentation
@@ -99,4 +99,4 @@ error
       end
     end
   end
-end
+end