| Index: README.md | 
| diff --git a/README.md b/README.md | 
| index 62ac2f8a4395d22bd75b36692056a7b41bb5e59c..2140c07d2be8c2905d886ded63e38c849d49a76b 100644 | 
| --- a/README.md | 
| +++ b/README.md | 
| @@ -86,6 +86,14 @@ extension's Options page, open the JavaScript Console and type in: | 
| location.href = "qunit/index.html"; | 
|  | 
| The unit tests will run automatically once the page loads. | 
| +You can also run these tests with a headless Firefox process. Install the | 
| +dependencies first: | 
| + | 
| +    npm install | 
| + | 
| +Start the testing process: | 
| + | 
| +    npm test | 
|  | 
| Linting | 
| ------- | 
| @@ -101,4 +109,3 @@ and everything needed after you run: | 
| Then you can run to lint the code: | 
|  | 
| npm run lint | 
| - | 
|  |