Conform to function declaration standards

- declare desc variable
- declare all positional arguments
- set the cmd
- properly handle DOKKU_APP_NAME

commands

@@ -89,7 +89,7 @@ case "$1" in
       declare desc="return $PLUGIN_COMMAND_PREFIX plugin help content"
       cat<<help_content
     $PLUGIN_COMMAND_PREFIX:clone <name> <new-name>, Create container <new-name> then copy data from <name> into <new-name>
-    $PLUGIN_COMMAND_PREFIX:connect <name>, Connect via telnet to a $PLUGIN_SERVICE service
+    $PLUGIN_COMMAND_PREFIX:connect <name>, Connect via mongo to a $PLUGIN_SERVICE service
     $PLUGIN_COMMAND_PREFIX:create <name>, Create a $PLUGIN_SERVICE service
     $PLUGIN_COMMAND_PREFIX:destroy <name>, Delete the $PLUGIN_SERVICE service and stop its container if there are no links left
     $PLUGIN_COMMAND_PREFIX:export <name>, Export a dump of the $PLUGIN_SERVICE service database