feat: add Contributing page

Signed-off-by: Gabriel Cozma <[email protected]>

Author: GabsEdits

CONTRIBUTING.md

@@ -0,0 +1,36 @@
+# How to contribute
+
+Thanks for considering contributing to Feed for Deno!
+
+## Getting Started
+
+If you're new to contributing to open-source projects, you can start by checking out the [GitHub documentation](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests) on how to contribute to a project.
+
+### Installation
+
+The project uses [Deno](https://deno.land/) as the runtime environment. You can install Deno by following the instructions on the [official website](https://deno.com/).
+
+### Commit Messages and Pull Requests
+
+Please follow the [conventional commit guidelines](https://www.conventionalcommits.org/en/v1.0.0/) when writing commit messages. This will help us to generate the changelog automatically.
+
+When creating a pull request, please make sure to include a detailed description of the changes you made. This will help us to understand the changes and review the pull request faster.
+
+## Running Tests
+
+You can run the tests using the following command:
+
+```bash
+deno test
+```
+
+If you want to run the tests on just a specific generator (e.g., `RSS`), you can use the following command:
+
+```bash
+deno test --filter "RSS"
+```
+
+Every new pull request and commit will trigger the tests to run automatically using GitHub Actions. If the tests fail, the pull request will require a change to pass the tests.
+
+> [!NOTE]
+> Sometimes, the CI fails due to formatting issues. You can fix the formatting by running `deno fmt` and pushing the changes.

deno.json

@@ -2,5 +2,5 @@
   "name": "@feed/feed",
   "version": "1.0.1",
   "exports": "./mod.ts",
-  "exclude": [".github"]
+  "exclude": [".github", "CONTRIBUTING.md"]
 }