Prevent users from giving themselves karma, optionally post no gif

Signed-off-by: Brian Donohue <[email protected]>

scripts/example.coffee

@@ -15,12 +15,16 @@ module.exports = (robot) ->
   plusplus_minusminus_re = /@([a-z0-9_\-\.]+)[\+\-]{2,}/ig
 
   robot.hear plusplus_minusminus_re, (msg) ->
+     sending_user = msg.message.user.name
      res = ''
      while (match = plusplus_re.exec(msg.message))
          user = match[1].replace(/\-+$/g, '')
-         count = (robot.brain.get(user) or 0) + 1
-         robot.brain.set user, count
-         res += "@#{user}++ [woot! now at #{count}]\n"
+         if user != sending_user
+            count = (robot.brain.get(user) or 0) + 1
+            robot.brain.set user, count
+            res += "@#{user}++ [woot! now at #{count}]\n"
+         else if process.env.KARMABOT_NO_GIF
+            res += process.env.KARMABOT_NO_GIF
      while (match = minusminus_re.exec(msg.message))
          user = match[1].replace(/\-+$/g, '')
          count = (robot.brain.get(user) or 0) - 1