Handle routes

 const http = require('http');
 
-const server = http.createServer();
+const server = http.createServer((req,res) => {
+    if (req.url === '/') {
+        res.write('Hello World');
+        res.end();
+    }
+
+    if(req.url === '/api/courses') {
+        res.write(JSON.stringify([1,2,3]));
+        res.end();
+    }    
+});
 
-server.on('connection',(socket) => {
-    console.log('New Connection...');
-} );
 
 server.listen(3000);