Update README.md

Closes #11

README.md

@@ -33,16 +33,22 @@ console.log('[%s] Server running at http://127.0.0.1:8080/', process.pid);
 Example: 
 `kill -SIGUSR2 <the process id of your nodejs app>`
 
-2. Using your browser, go to
-
-http://c4milo.github.com/node-webkit-agent/19.0.1084.46/inspector.html?host=localhost:1337&page=0
+2. Using your browser, go to devtools frontend URL corresponding to your nodejs version
+##### Nodejs v0.6.x
+http://c4milo.github.com/node-webkit-agent/19.0.1084.46/inspector.html?host=localhost:8080&page=0
+##### Nodejs v0.8.x
+http://c4milo.github.com/node-webkit-agent/21.0.1180.57/inspector.html?host=localhost:8080&page=0
 
 It's important to make sure your browser supports websockets, otherwise the front-end won't be able to connect to the node agent whatsoever.
 
 You can also change the agent port and host where it listen to by setting up the DEBUG_PORT and DEBUG_HOST environment variables.
 
 For more documentation about how to use and interpret devtools, please go to the [Devtools official documentation](http://code.google.com/chrome/devtools/docs/overview.html)
 
+## Heads Up
+ABI compatibility is breaking between nodejs v0.6.x and v0.8.x, therefore if you switch nodejs versions you would have to re-install 
+webkit-devtools-agent again. See issue #11.
+
 ##Screenshots
 ### CPU profiling
 ![Screenshot](http://i.imgur.com/XLFG5.png)