add api docs for command

modules/command/README.md

@@ -12,3 +12,48 @@ Handles the command execution logic for DBot.
 
 This is the only module which is force loaded, even if it's not specified in
 the configuration file.
+
+### Commands
+
+#### ~usage [command]
+Show usage information for a given command.
+
+#### ~help [command|module]
+Link module help for a module given either the module name or the name of a
+command belonging to a module.
+
+### API
+
+#### isBanned(user, command)
+Return whether a user is currently banned from a given commands.
+
+#### hasAccess(user, command)
+Return whether a user has the access level (moderator, admin) to run a given
+command.
+
+#### isIgnoring(user, command)
+Return whether a user is currently marked as ignoring a given command.
+
+#### addHook(command, callback)
+This API function allows you to hook functions into DBot commands. For example,
+you may add a hook to post on Identica when a new quote is added to the database
+with the ~qadd command. As a less useful example, here is how you might add a
+hook to log to the console every time someone uses the reload command:
+
+    dbot.api.command.addHook('reload', function() {
+        console.log('Reload run!');    
+    });
+
+Hook arguments are populated by the return values of the functions they are
+hooked into, and command hooks are not run if the command explicitly returns
+'false.' For example, the ~qadd command returns *[ key, quote ]*, and the hook
+function will be called with these variables given in the order they were
+returned, so you would retrieve the key and the quote from a hook to ~qadd like
+this:
+
+    dbot.api.command.addHook('~qadd', function(key, quote) { ...
+
+The best place to add hooks to commands is in the 'onLoad' function of your
+module, as this ensures it will be run while all other modules are loaded. If
+the target command does not exist (for example if its module was not loaded),
+the hook will not be added and no errors will be thrown.