updated docs on coverage command

docs/FAQ.md

@@ -216,11 +216,10 @@ Install the [Redux devtools extension](https://chrome.google.com/webstore/detail
 Hot reloading doesn't always play nicely with stateless functional components at this time. [This is a known limitation that is currently being worked](https://github.com/gaearon/babel-plugin-react-transform/issues/57). To avoid issues with hot reloading for now, use a traditional class-based React component at the top of your component hierarchy.
 
 ### How do I setup code coverage reporting?
-Using the `npm run test:cover` command to run the tests, building a code coverage report. The report is written to `coverage/index.html`. A quick way to check coverage is:
+Using the `npm run test:cover` command to run the tests, building a code coverage report. The report is written to `coverage/index.html`. Slingshot simplifies provides a script for this:
 
 ```bash
-npm run test:cover
-open ./coverage/index.html
+npm run open:cover
 ```
 
 You can add code coverage metrics to your `README.md` file and pull by integrating with [Coveralls](https://coveralls.io/).