Add CONTRIBUTING.md document (#198)

CONTRIBUTING.md

@@ -0,0 +1,39 @@
+# How to contribute to the Exercism {{LANGUAGE}} track
+
+#### **Do you want to add an exercise?**
+
+- **Ensure that someone else isn't already adding it** by searching the [forum](https://forum.exercism.org/c/programming/{{SLUG}}) and the repository's [issues](https://github.com/exercism/{{SLUG}}/issues) and [pull requests](https://github.com/exercism/{{SLUG}}/pulls).
+
+- If nobody is yet adding the exercise, [open a conversation](https://forum.exercism.org/c/programming/{{SLUG}}) and indicate you'd like to add the exercise.
+
+- Follow the [Add a Practice Exercise docs](https://exercism.org/docs/building/tracks/practice-exercises/add).
+
+#### **Do you want to report a bug?**
+
+- **Ensure the bug was not already reported** by searching the [forum](https://forum.exercism.org/c/programming/{{SLUG}}).
+
+- If you're unable to find an open conversation addressing the problem, [open a new one](https://forum.exercism.org/new-topic?category={{SLUG}}). Be sure to include a **title and clear description**, as much relevant information as possible, and (when possible) a **code sample**.
+
+#### **Do you want to fix a bug?**
+
+- **Ensure that the bug is [reported](#do-you-want-to-report-a-bug)**.
+  Only start fixing the bug when there is agreement on whether (and how) it should be fixed.
+
+- Fix the bug and [submit a Pull Request](https://exercism.org/docs/building/github/contributors-pull-request-guide) to this repository.
+
+- Ensure the PR description clearly describes the problem and solution.
+  Include a link to the bug's corresponding forum conversation.
+
+- Before submitting, please read the [Contributors Pull Request Guide](https://exercism.org/docs/building/github/contributors-pull-request-guide) and [Pull Request Guide](https://exercism.org/docs/community/being-a-good-community-member/pull-requests).
+
+#### **Do you intend to add a new feature or change an existing one?**
+
+- **Ensure that the feature or change is discussed on the [forum](https://forum.exercism.org/c/programming/{{SLUG}}).**
+  Only start adding the feature or change when there is agreement on whether (and how) it should be added or changed.
+
+- Add the feature or change and [submit a Pull Request](https://exercism.org/docs/building/github/contributors-pull-request-guide) to this repository.
+
+- Ensure the PR description clearly describes the problem and solution.
+  Include a link to the bug's corresponding forum conversation.
+
+- Before submitting, please read the [Contributors Pull Request Guide](https://exercism.org/docs/building/github/contributors-pull-request-guide) and [Pull Request Guide](https://exercism.org/docs/community/being-a-good-community-member/pull-requests).

bin/bootstrap

@@ -75,6 +75,7 @@ end
   "config.json",
   "README.md",
   "CHECKLIST.md",
+  "CONTRIBUTING.md",
   File.join("bin", "verify-exercises-in-docker"),
   File.join("docs", "config.json")
 ].each do |name|