Merge pull request #54 from dongminlee94/docs/add_pr_template

Add pr template

.github/pull_request_template.md

@@ -0,0 +1,20 @@
+## PR Description
+
+[//]: # (Please explain the changes you made.)
+
+## Related Issues
+
+[//]: # (Please link the related issues, if applicable.)
+
+## Checklist
+
+- [ ] **Assignees** ran the [make format](https://github.com/dongminlee94/meta-rl#development).
+- [ ] **Assignees** ran the [make lint](https://github.com/dongminlee94/meta-rl#development) command and the code passed the linters.
+- [ ] **Assignees** added necessary unit tests, and the code passes the [make utest](https://github.com/dongminlee94/meta-rl#development) command.
+- [ ] **Assignees** updated the README, if necessary.
+- [ ] **Assignees** checked the runnability of the code.
+- [ ] **Reviewers** checked the runnability of the code.
+
+## Optional section (e.g., code usage, experimental results, TODO)
+
+[//]: # (If Assignees have any additional information, please add them.)