GitHub Bot
Cocogitto also has a GitHub bot that decorates pull request with status check.
To install it just go to github.com/apps/cocogitto-bot and click "Configure". Add the desired repository and grant the required permission.
Once it is done cocogitto-bot will comment on every pull-request events :
Example:
Success:
Failure:
TIP
You can make status check mandatory to enforce conventional commits in your pull-requests.