change PR template to suit vial

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,35 +1,9 @@
-<!--- Provide a general summary of your changes in the title above. -->
+<!---
+    For keyboard addition or changes, Vial will accept keyboards that implement "default" and "via" keymaps.
 
-<!--- This template is entirely optional and can be removed, but is here to help both you and us. -->
-<!--- Anything on lines wrapped in comments like these will not show up in the final text. -->
+    User keymaps (i.e. https://github.com/vial-kb/vial-qmk/tree/vial/users) will not be accepted at the moment.
 
-## Description
+    For other core changes, please explain what you are changing and why.
 
-<!--- Describe your changes in detail here. -->
-
-## Types of Changes
-
-<!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply. -->
-- [ ] Core
-- [ ] Bugfix
-- [ ] New feature
-- [ ] Enhancement/optimization
-- [ ] Keyboard (addition or update)
-- [ ] Keymap/layout/userspace (addition or update)
-- [ ] Documentation
-
-## Issues Fixed or Closed by This PR
-
-* 
-
-## Checklist
-
-<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
-<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
-- [ ] My code follows the code style of this project: [**C**](https://docs.qmk.fm/#/coding_conventions_c), [**Python**](https://docs.qmk.fm/#/coding_conventions_python)
-- [ ] I have read the [**PR Checklist** document](https://docs.qmk.fm/#/pr_checklist) and have made the appropriate changes.
-- [ ] My change requires a change to the documentation.
-- [ ] I have updated the documentation accordingly.
-- [ ] I have read the [**CONTRIBUTING** document](https://docs.qmk.fm/#/contributing).
-- [ ] I have added tests to cover my changes.
-- [ ] I have tested the changes and verified that they work and don't break anything (as well as I can manage).
+    Before submitting a PR, delete the entirety of this comment and document your changes.
+-->