Add HEROKU_HOSTNAME config variable.

This will allow the HTTP keep alive request to work on Heroku hosts. Heroku
won't allow you to make requests to localhost.

package.json

@@ -15,11 +15,11 @@
   },
 
   "dependencies": {
-    "coffee-script": "1.2.0",
+    "coffee-script": "1.3.1",
     "optparse": "1.0.3",
     "scoped-http-client": "0.9.6",
     "log": "1.3.0",
-    "connect": "2.0.3",
+    "connect": "2.1.0",
     "connect_router": "1.8.6"
   },
 

src/robot.coffee

@@ -161,7 +161,7 @@ class Robot
   #
   # Sets up basic authentication if parameters are provided
   #
-  # Returns: nothing.
+  # Returns nothing.
   setupConnect: ->
     user = process.env.CONNECT_USER
     pass = process.env.CONNECT_PASSWORD
@@ -170,9 +170,7 @@ class Robot
 
     @connect = Connect()
 
-    if user and pass
-      @connect.use Connect.basicAuth(user, path)
-
+    @connect.use Connect.basicAuth(user, path) if user and pass
     @connect.use Connect.bodyParser()
     @connect.use Connect.router (app) =>
 
@@ -195,10 +193,12 @@ class Robot
 
     @connect.listen process.env.PORT || 8080
 
-    setInterval =>
-      HttpClient.create("http://localhost:#{process.env.PORT || 8080}/hubot/ping")
-        .post() (err, res, bod) =>
-          @logger.info "Keep alive ping!"
+    hostname = process.env.HEROKU_HOSTNAME || "localhost:#{process.env.PORT || 8080}/"
+
+    setinterval =>
+      httpclient.create("#{hostname}/hubot/ping")
+        .post() (err, res, body) =>
+          @logger.info "keep alive ping!"
     , 1200000
 
   # Load the adapter Hubot is going to use.