use gun for todo list

examples/angular/server.js

@@ -0,0 +1,20 @@
+var port = process.env.OPENSHIFT_NODEJS_PORT || process.env.VCAP_APP_PORT || process.env.PORT || process.argv[2] || 8080;
+var host = process.env.OPENSHIFT_NODEJS_HOST || process.env.VCAP_APP_HOST || process.env.HOST || 'localhost';
+
+var express = require('express');
+var proxy = require('express-http-proxy');
+var http = require('http');
+var app = express();
+var server = http.createServer(app);
+
+var Gun = require('gun');
+var gun = Gun({
+	file: 'data.json',
+	web: server
+});
+
+app.use(Gun.serve);
+app.use(proxy(host + ':4200'));
+server.listen(port);
+
+console.log('Server started on port ' + port + ' with /gun');