use longform port flag + consistent formatting

README.md

@@ -19,7 +19,7 @@ $> npm install peer
 Run the server:
 
 ```bash
-$> peerjs -p 9000 --key mykey
+$> peerjs --port 9000 --key peerjs
 ```
 
 Or, create a custom server:
@@ -31,13 +31,16 @@ var server = new PeerServer({ port: 9000 });
 
 Connecting to the server from PeerJS:
 
+```html
 <script>
     // No API key required when not using cloud server
     var peer = new Peer('someid', {host: 'localhost', port: 9000});
 </script>
+```
 
 Using HTTPS: Simply pass in PEM-encoded certificate and key.
 
+```javascript
 var fs = require('fs');
 var PeerServer = require('peer').PeerServer;
 
@@ -48,6 +51,7 @@ Using HTTPS: Simply pass in PEM-encoded certificate and key.
     certificate: fs.readFileSync('/path/to/your/ssl/certificate/here.crt')
   }
 });
+```
 
 ## Problems?