Add CORS capability to Flask

Add static blog demo files

demo/app.js

@@ -0,0 +1,14 @@
+var http = require('http');
+var finalhandler = require('finalhandler');
+var serveStatic = require('serve-static');
+
+var serve = serveStatic("./public"),
+  port = 9000;;
+
+var server = http.createServer(function(req, res){
+  var done = finalhandler(req, res)
+  serve(req, res, done)
+});
+
+server.listen(port);
+console.log('serve static resources at http://localhost:%d', port);