Get demo working on Windows

- Removed bin bash scripts in favor of npm scripts so they work
  cross-platform
- Moved to use 127.0.0.1 as 0.0.0.0 doesn't work on Windows

Note that this doesn't work with the current pty.js as it doesn't build on
Windows.

package.json

@@ -13,7 +13,7 @@
     "chai": "3.5.0"
   },
   "scripts": {
-    "start": "bash bin/server",
-    "test": "bash bin/test --recursive"
+    "start": "node demo/app.js",
+    "test": "node_modules/.bin/mocha --recursive"
   }
 }