Status check should cover "mergeability" #725
Description
Issue Type: Feature Request
As on GH, status checks displayed on the Overview page of a PR should include the "mergeability" status.
Extension version: 0.3.1
VS Code version: Code - Insiders 1.30.0-insider (fa87e67ebfd6b8014ba697ddbc6c2d6c0e2cb970, 2018-12-04T09:26:33.257Z)
OS version: Darwin x64 18.0.0