Updated docs

Author: dantleech

src/PHPCR/Util/Console/Command/MoveCommand.php

@@ -44,10 +44,13 @@ protected function configure()
             ->addArgument('destination', InputArgument::REQUIRED, 'Destination for node')
             ->setDescription('Moves a node from one path to another')
             ->setHelp(<<<EOF
-This command simply moves a node from one path
-(the source path) to another (the destination path)
+This command simply moves a node from one path (the source path) 
+to another (the destination path), it can also be considered
+as a rename command.
 
     $ php bin/phpcr phpcr:move /foobar /barfoo
+
+Note that the parent node of the destination path must already exist.
 EOF
             )
         ;