Help text + more idiomatic coffeescript

src/scripts/whatis.coffee

@@ -1,30 +1,26 @@
 # 
-# whatis <term> - search the term on urbandictionary.com, return the
+# whatis <term> - search the term on urbandictionary.com and get a random popular definition for the term.
 
 jsdom = require('jsdom').jsdom
 
 module.exports = (robot) ->
   robot.respond /whatis (.+)$/i, (msg) ->
     msg
-      .http('http://www.urbandictionary.com/define.php?term=' + msg.match[1])
+      .http('http://www.urbandictionary.com/define.php?term=' + (encodeURIComponent msg.match[1]))
       .get() (err, res, body) ->
-        window = (jsdom body, null, {
-          features : {
+        window = (jsdom body, null,
+          features :
             FetchExternalResources : false
             ProcessExternalResources : false
             MutationEvents : false
             QuerySelector : false
-          }
-        }).createWindow()
+        ).createWindow()
 
         $ = require('jquery').create(window)
 
         definitions = []
         $(".definition").each (idx, item) ->
           definitions.push $(item).text()
 
-        if definitions.length == 0
-          msg.send "No definition found."
-        else
-          msg.send (msg.random definitions)
-
+        msgText = if definitions.length==0 then "No definition found." else (msg.random definitions)
+        msg.send msgText