pull-request-template: add inital template (#23)

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,42 @@
+<!--
+Please read the [Code of Conduct](https://github.com/appsody/website/blob/master/CODE_OF_CONDUCT.md) and the [Contributing Guidelines](https://github.com/appsody/website/blob/master/CONTRIBUTING.md) before opening a pull request.
+-->
+
+- [ ] commit message follows [commit guidelines](https://github.com/appsody/website/blob/master/CONTRIBUTING.md#commit-message-guidelines).
+
+## Related Issues
+<!--
+  Link to the issue that is fixed by this PR (if there is one)
+  e.g. Fixes #32, Related to #54, etc.
+-->
+Fixes #
+
+## Contributing a new stack:
+<!--- 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! -->
+- [ ] Changes adhere to the [Appsody stack structure](https://github.com/appsody/website/blob/master/content/docs/stacks/stack-structure.md)
+
+Please provide the following in as much detail as you can:
+
+- [ ] Provided a README that conforms to published guidelines
+
+Provide usage of the Appsody controller:
+<!--- Describe how your stack utilses the Appsody Controller -->
+
+Explain your rationale behind mount points:
+<!--- Describe the mount points your stack uses -->
+
+Explain the commands that your stack executes:
+<!--- Describe what commands your stack uses -->
+
+Describe any limitations and known issues:
+<!--- Please provide details about any limitations your stack has and describe any known issues -->
+
+- [ ] Stack meets the [technical requirements](https://github.com/appsody/stacks/blob/master/TECHNICAL_REQUIREMENTS.md) (STABLE stack only)
+
+## Modifying an existing stack:
+
+### Description
+<!--- Describe your changes in detail -->
+
+- [ ] Stack meets the [technical requirements](https://github.com/appsody/stacks/blob/master/TECHNICAL_REQUIREMENTS.md) (STABLE stack only)