Merge pull request #736 from tybenz/master

Fixes to hangout.coffee

Author: Tom Bell

src/scripts/hangout.coffee

@@ -15,8 +15,8 @@
 #   nicoritschel
 
 module.exports = (robot) ->
-  robot.listen /hangout(.*)/i, (msg) ->
-    if HUBOT_HANGOUT_URL
+  robot.respond /hangout\s?(.*)?/i, (msg) ->
+    if process.env.HUBOT_HANGOUT_URL
       msg.send process.env.HUBOT_HANGOUT_URL
     else
-      msg.send "Environment variable HUBOT_HANGOUT_URL has not been set. Add EXPORT HUBOT_HANOUT_URL="..." to your profile"
+      msg.send 'Environment variable HUBOT_HANGOUT_URL has not been set. Add EXPORT HUBOT_HANGOUT_URL="..." to your Procfile.'