Update triggers for !urban; update README.

README.md

@@ -37,6 +37,15 @@ IRC Commands
   `"praises"` with the key `"earwig"` and the value
   `"Earwig is the bestest Python programmer ever!"`.
 
+- **urbandictionary**: looks up terms on
+  [Urban Dictionary](https://www.urbandictionary.com/). Separated from the main
+  command list because these are often distasteful or unwanted.
+
+- **weather**: gives current weather information for a location from
+  [Weather Underground](http://www.wunderground.com/). Requires an API key
+  stored in its config as `"apiKey"`, which should be stored encrypted if that
+  option is enabled.
+
 Bot Tasks
 ---------
 

commands/urbandictionary.py

@@ -13,8 +13,7 @@ from earwigbot.commands import Command
 class UrbanDictionary(Command):
     """Get the definition of a word or phrase using Urban Dictionary."""
     name = "urban"
-    commands = ["urban", "urbandictionary", "dictt", "definee", "defne", "dct",
-                "ud"]
+    commands = ["urban", "urbandictionary", "dct", "ud"]
 
     def process(self, data):
         if not data.args: