CONTRIBUTING.md

   1 - Use **English.**
   2 - Search for **duplicates**—also closed issues.
   3 - Bugs: Include **VimFx version,** Firefox version, OS and keyboard layout.
   4   Provide an example **URL** where it happens. Also, **did it use to work before?**
   5 - Feature requests: Include a specific detailed **use case** example.
   6
   7 Contributing code? See [CONTRIBUTING-CODE.md](CONTRIBUTING-CODE.md).