a draft for a pull_request template

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,7 @@
+<!--- Provide a general summary of your changes in the Title above -->
+
+## Description
+<!--- Describe your changes in detail -->
+
+## Existing Issue(s)
+<!--- If it fixes an open issue, please link to the issue here. -->