cmd/ipfs2: Added a 'commands' command for CLI root

cmd/ipfs2/ipfs.go

@@ -14,6 +14,7 @@ var rootSubcommands = map[string]*cmds.Command{
 	"daemon":   daemonCmd, // TODO name
 	"init":     initCmd,   // TODO name
 	"tour":     cmdTour,
+	"commands": commands.CommandsCmd(Root),
 }
 
 func init() {