Add PR template

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,22 @@
+Hi there!
+
+Thank you so much for contributing this pull request. We love when the community
+steps up and share, and we're enormously thankful.
+
+You don't have to do all of those following things, they are what we try and get 
+done for code coming in:
+
+ - [x] the code
+ - [ ] If it's a non-trivial piece of code, signing a CLA
+ - [ ] If it breaks, change, fix or add to existing behaviour, updating
+       CHANGELOG.md
+ - [ ] If it's a bug fix, tests in the Tests `project`, or scenarios in the `TestRig`.
+ - [ ] On top of HEAD, unless it's a bugfix on a previous version
+ - [ ] VERSION file updated if not creating a pull-request on top of `master`
+
+If those are needed, and you haven't and can't, we thank you enromously for your
+contirbution, and we'll add those before merging the pull request.
+
+Thanks!
+
+The OpenRasta community