Add contributing documentation

Fix #6

2 files changed, 52 insertions, 6 deletions

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..ca9515f
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,41 @@
+# Contributing
+
+## Development Guide
+
+### Setting up a dev environment
+
+Install the following through your system's package manager or by visiting the
+project's website.
+
+- [NodeJS](https://nodejs.org) 18 (LTS) or newer
+- npm 8 or newer (note that this is generally bundled with Node
+
+### Building and running tests
+
+Dependencies are fetched with NPM.
+
+```sh
+npm install
+```
+
+After fetching dependencies, tests can also be run using NPM. This includes both
+linting and unit tests.
+
+```sh
+npm test
+```
+
+## Submitting contributions
+
+If you have a change you'd like to contribute upstream, please open a pull
+request on
+[Codeberg](https://codeberg.org/worthe-it/south-african-id-parser/pulls).
+
+## I Have a Question
+
+If you have a question which isn't answered by any of the existing
+documentation, please open an
+[issue](https://codeberg.org/worthe-it/south-african-id-parser/issues).
+
+Please search the issues to see if anyone else has already asked the same
+question before opening a new issue.
diff --git a/README.md b/README.md
index e359a22..9751463 100644
--- a/README.md
+++ b/README.md
@@ -140,6 +140,14 @@ var isSouthAfricanCitizen = saIdParser.parseIsSouthAfricanCitizen(validIdNumber)
 // isSouthAfricanCitizen === true
 ```
 
+## Releases
+
+See [CHANGELOG.md](./CHANGELOG.md) for release notes.
+
+Releases are also available on
+[NPM](https://www.npmjs.com/package/south-african-id-parser) and
+[Codeberg](https://codeberg.org/worthe-it/south-african-id-parser/releases).
+
 ## Reporting issues
 
 Please report any issues on the project's [issue
@@ -153,13 +161,10 @@ features.
 This project is still actively maintained. Reported issues will be addressed,
 and dependencies will be kept up to date.
 
-## Releases
-
-See [CHANGELOG.md](./CHANGELOG.md) for release notes.
+## Contributing
 
-Releases are also available on
-[NPM](https://www.npmjs.com/package/south-african-id-parser) and
-[Codeberg](https://codeberg.org/worthe-it/south-african-id-parser/releases).
+See [CONTRIBUTING.md](./CONTRIBUTING.md) for instructions on setting up a
+development environment to make changes and submit contributions.
 
 ## Support