Updated mergeable config to check for testing statement in PR description (#161)

* updated mergeable config

Author: King Long Tse

.github/mergeable.yml

@@ -1,6 +1,7 @@
 version: 2
 mergeable:
   - when: pull_request.*
+    name: 'PR description: versioning'
     validate:
     - do: or
       validate:
@@ -12,3 +13,10 @@ mergeable:
         must_include:
           regex: 'New version is not required'
           message: 'Should cut a new version or explicitly documents new version not required in description'
+  - when: pull_request.*
+    name: 'PR description: testing'
+    validate:   
+      - do: description    
+        must_include:
+          regex: 'Testing completed successfully|Testing not required'
+          message: 'Please describe how testing was done or explicitly state testing not required'