renamed main file from app.coffee to heartbit.coffee and added a custom 404 page

src/app.coffee

@@ -1,33 +0,0 @@
-# Module Dependencies
-express = require 'express'
-app = module.exports = express.createServer()
-
-
-# Configuration
-app.configure ->
-  app.set 'views', __dirname + '/views'
-  app.set 'view engine', 'coffee'
-  app.register '.coffee', require('coffeekup').adapters.express
-  app.use express.bodyParser()
-  app.use express.methodOverride()
-  app.use express.static(__dirname + '/public')
-
-app.configure 'development', ->
-  app.use express.errorHandler(dumpExceptions: true, showStack: true)
-
-app.configure 'production', ->
-  app.use express.errorHandler()
-  app.use require('./middleware/host_redirect')
-    "www.heartb.it": "http://heartb.it/"
-
-
-# Routes
-app.get '/', (req, res) ->
-  res.render 'index', format: true
-
-
-# Set port and start server.
-app.listen process.env.PORT || 3000
-
-console.log "Express server listening on port %d in %s mode",
-  app.address().port, app.settings.env

src/heartbit.coffee

@@ -0,0 +1,38 @@
+# Module Dependencies.
+express = require 'express'
+
+# Create server instance.
+server = module.exports = express.createServer()
+
+# Configuration.
+server.configure ->
+  server.set 'views', __dirname + '/views'
+  server.set 'view engine', 'coffee'
+  server.register '.coffee', require('coffeekup').adapters.express
+  server.use express.bodyParser()
+  server.use express.methodOverride()
+  server.use express.static(__dirname + '/public')
+
+server.configure 'development', ->
+  server.use express.errorHandler(dumpExceptions: true, showStack: true)
+
+server.configure 'production', ->
+  server.use express.errorHandler()
+  server.use require('./middleware/host_redirect')
+    "www.heartb.it": "http://heartb.it/"
+
+
+# Routes
+server.get '/', (req, res) ->
+  res.render 'index', format: true
+
+# 404 Fallback
+server.get '*', (req, res) ->
+  res.render '404', format: true
+
+# Set port and start server.
+server.listen process.env.PORT || 3000
+
+# Print debug
+console.log "Express server listening on port %d in %s mode",
+  server.address().port, server.settings.env