Add acceptance critera as part of snapred PR template (#457)

* add acceptance critera as part of snapred PR template

* move criteria to near EWM item section

.github/PULL_REQUEST_TEMPLATE.md

@@ -56,7 +56,26 @@ If testing should instead be done from the GUI, explain
 
 [EWM#<ticket_number>](https://ornlrse.clm.ibmcloud.com/ccm/web/projects/Neutron%20Data%20Project%20(Change%20Management)#action=com.ibm.team.workitem.viewWorkItem&id=<ticket_number>)
 
+### Verification
+
+- [ ] the author has read the EWM story and acceptance critera
+- [ ] the reviewer has read the EWM story and acceptance criteria
+- [ ] the reviewer certifies the acceptance criteria below reflect the criteria in EWM
+
 <!--
 Inside the EWM, paste a link to this PR in a comment there
 Link to any other relevant context, such as related mantid PRs, related SNAPRed PRs, related issues, etc.
 -->
+
+### Acceptance Criteria
+
+<!-- COPY/PASTE here the acceptance criteria from the EWM story item.
+These should come from the TAB and not the description, unless they are given in a specific section of the description.
+If none were given, ask the owner what they are.
+Make sure they format as a checklist in your PR description.
+-->
+
+This list is for ease of reference, and does not replace reading the EWM story as part of the review.  Verify this list matches the EWM story before reviewing.
+
+- [ ] acceptance criterion 1
+- [ ] acceptance criterion 2