add help functions to Module.py

Module.py

@@ -154,5 +154,23 @@ class Module(object):
 
         print("looks like someone forgot to implement do!")
 
+    def help_description(self):
+        """Return a quick list of commands or other summary, should be
+        less than two lines. If you want the module hidden from "!help",
+        return None here"""
+        return None
+
+    def help_summary(self):
+        """Return a command summary or longer description of this module.
+        If this returns None, the summary will be
+        "no help available for module foo"
+        """
+        return None
+
+    def help_detail(self, command):
+        """Return detailed help for the given command. Return None if there
+        is no suitable help available"""
+        return None
+
 # vi:tabstop=4:expandtab:autoindent
 # kate: indent-mode python;indent-width 4;replace-tabs on;