added PR template (issue templates existed already).

.github/PULL_REQUEST_TEMPLATE/generic_pull_request.md

@@ -0,0 +1,22 @@
+<!--- Provide a general summary of your changes in the Title above -->
+<!--- This template can be modified slighty to the needs of the pull request -->
+
+## Description
+<!--- Describe your changes in detail -->
+
+## Motivation and Context
+<!--- Why is this change required? What problem does it solve? -->
+<!--- If it fixes an open issue, please link to the issue here. -->
+
+## How Has This Been Tested?
+<!--- Please describe in detail how you tested your changes. -->
+<!--- Include details of your testing environment, tests ran to see how -->
+<!--- your change affects other areas of the code, etc. -->
+
+## Screenshots (if appropriate):
+
+## Checklist:
+<!--- These can be used to show you've met the issue criteria, or simlar. -->
+<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
+- [ ] My change requires a change to the documentation.
+- [ ] I have updated the documentation accordingly.