📝 Add a section about gitmoji-changelog (#269)

* 📝 Add a section about gitmoji-changelog

* 📝 Create a related tools section

* 👌 Add hyphen

Co-authored-by: Vinícius Hoyer <contact@vhoyer.dev>

Co-authored-by: Vinícius Hoyer <contact@vhoyer.dev>
Co-authored-by: Carlos Cuesta <carloscuesta@me.com>

README.md

@@ -28,6 +28,10 @@ To use gitmojis from your command line install [gitmoji-cli](https://github.com/
 npm i -g gitmoji-cli
 ```
 
+## Related tools
+
+- [gitmoji-changelog](https://github.com/frinyvonnick/gitmoji-changelog/): A changelog generator for gitmoji 😜 It uses emojis in your commit messages to group them and create a markdown file with your changes.
+
 ## Contributing to gitmoji
 
 Contributing to gitmoji is a piece of :cake:, read the [contributing guidelines](https://github.com/carloscuesta/gitmoji/blob/master/.github/CONTRIBUTING.md). You can discuss emojis using the [issues section](https://github.com/carloscuesta/gitmoji/issues/new). To add a new emoji to the list create an issue and send a pull request, see [how to send a pull request and add a gitmoji](https://github.com/carloscuesta/gitmoji/blob/master/.github/CONTRIBUTING.md#how-to-add-a-gitmoji).