Add an issue template

GitHub is not the right place for usage questions, and this repo is not the right place for tutorial / example requests (we have another repo for that).

Author: handrews

.github/ISSUE_TEMPLATE/json-schema-specification-issue-template.md

@@ -0,0 +1,11 @@
+---
+name: JSON Schema Specification issue template
+about: Redirect usage questions to the web site and slack workspace.
+
+---
+
+_This repository is for issues with the **specifications themselves**._
+
+_For **help with using JSON Schema**, please go to json-schema.org, or [join our slack workspace](https://join.slack.com/t/json-schema/shared_invite/enQtMjk1NDcyNDI2NTAwLTcyYmYwMjdmMmUxNzZjYzIxNGU2YjdkNzdlOGZiNjIwNDI2M2Y3NmRkYjA4YmMwODMwYjgyOTFlNWZjZjAyNjg)_.
+
+_If you would like to help with examples and tutorials, please [join our slack workspace] or visit the [Understanding JSON Schema repository].  **Do not** file generic "please add more examples" issues in this repository._