Install Firefox extension DEVELOPMENT MODE

Follow these steps:

1. Download the development version from the link in the application.
2. Drag this version onto your Firefox window and click install
3. 🎉 That's it. The top right corner of your browser should now show the ScreenomeX Debug Extension.

Hints: this Extension auto-updates, the update cycle for Firefox Plugins is 24 hours (contrary to Chrome it is not necessarily reliable - you might want to trigger updates from your Firefox Extensions page if it takes longer). If there is a delay in the publication of a development plugin version that you just built, it might still be in review (you can find the latest published version in your development menu bar). If you need to test your version faster than it is available via the auto-update mechanism, download it from the CI artifacts.