Add mention of headless mode to README.md

karma-runner · Sep 16, 2019 · cfb2e38 · cfb2e38
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diff --git a/README.md b/README.md
@@ -32,6 +32,8 @@ You can pass list of browsers as a CLI argument too:
 karma start --browsers Firefox,Chrome
 ```
 
+To run Firefox in headless mode, append `Headless` to the version name, e.g. `FirefoxHeadless`, `FirefoxNightlyHeadless`.
+
 ### Custom Preferences
 To configure preferences for the Firefox instance that is loaded, you can specify a custom launcher in your Karma
 config with the preferences under the `prefs` key: