Small missing information added to command description. --help also works like -h.

railties/lib/rails/commands.rb

@@ -93,7 +93,7 @@
  plugin       Install a plugin
  runner       Run a piece of code in the application environment (short-cut alias: "r")
 
-All commands can be run with -h for more information.
+All commands can be run with -h (or --help) for more information.
   EOT
   exit(1)
 end