readme: fix namespace and point to launch fn

README.md

@@ -59,11 +59,13 @@ Now run:
 ```sh
 yarn start
 ```
-
-The `Puppeteer` module should now be available in your Reason source files.
 While the `start` command is running, it will attempt to recompile your code each time you save it.
 One-off builds can be done with `yarn build`.
 
+The `BsPuppeteer` module should now be available in your source files.
+You can launch a new browser instance using `BsPuppeteer.Puppeteer.launch()`.
+See the [examples](examples/) for a more detailed demonstration.
+
 For interacting with the DOM on pages you navigate to we recommend using
 [bs-webapi](https://github.com/reasonml-community/bs-webapi-incubator).