Add information on the project and some badges at the top of the README (#34)

Author: paulo-ferraz-oliveira

README.md

@@ -1,8 +1,46 @@
-# `arizona_example`
+# `arizona_example` [![CI][ci-img]][ci] [![Lint][lint-img]][lint]
+
+[ci]: https://github.com/arizona-framework/arizona_example/actions/workflows/ci.yml
+[ci-img]: https://github.com/arizona-framework/arizona_example/actions/workflows/ci.yml/badge.svg
+[lint]: https://github.com/arizona-framework/arizona_example/actions/workflows/lint.yml
+[lint-img]: https://github.com/arizona-framework/arizona_example/actions/workflows/lint.yml/badge.svg
 
 This is an example project (`rebar3`-based) for showcasing [Arizona](https://github.com/arizona-framework/arizona)'s
 capabilities, always aiming at the tip of its `main` branch (which is why there's no CHANGELOG).
 
 To run it, boot the Erlang/`rebar3` shell: e.g. `rebar3 shell`.
 
 If no errors were shown, the application should now be served at `localhost:8080`.
+
+## The project
+
+### Changelog
+
+There is no usable changelog. This example is always using Arizona's latest code.
+
+### Code of Conduct
+
+This project's code of conduct is made explicit in [CODE_OF_CONDUCT.md](https://github.com/arizona-framework/arizona_example/blob/main/CODE_OF_CONDUCT.md).
+
+### Contributing
+
+First of all, thank you for contributing with your time and energy.
+
+If you want to request a new feature make sure to [open an issue](https://github.com/arizona-framework/arizona_example/issues)
+so we can discuss it first.
+
+Bug reports and questions are also welcome, but do check you're using the latest version of the
+plugin - if you found a bug - and/or search the issue database - if you have a question, since it
+might have already been answered before.
+
+Contributions will be subject to the project's license.
+
+For more information check out [CONTRIBUTING.md](https://github.com/arizona-framework/arizona_example/blob/main/CONTRIBUTING.md).
+
+### License
+
+License information can be found inside [LICENSE.md](https://github.com/arizona-framework/arizona_example/blob/main/LICENSE.md).
+
+### Security
+
+This project's security policy is made explicit in [SECURITY.md](https://github.com/arizona-framework/arizona_example/blob/main/SECURITY.md).