add git pull request guide

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,16 @@
+....................................
+
+MAKE SURE YOU ARE OPENING A PULL 
+REQUEST AGAINST THE CORRECT BRANCH
+
+....................................
+
+master = bug fixes directly 
+addressing the current preview round
+
+round-X = new features, frameworks, 
+tests, and any other larger changes 
+that you would like to see in the 
+next round
+
+....................................