chore(timeout-issue): add even more CI services

Author: Realtin

content/timeout-issue.js

@@ -6,7 +6,16 @@ module.exports = ({ fullName }) =>
 
 To enable Greenkeeper, you need to make sure that a [commit status](https://help.github.com/articles/about-statuses/) is reported on all branches. This is required by Greenkeeper because it uses your CI build statuses to figure out when to notify you about breaking changes.
 
-Since we didn’t receive a CI status on the ${branchLink(fullName)} branch, it’s possible that you don’t have CI set up yet. We recommend using [Circle CI](https://circleci.com/) or [Travis CI](https://travis-ci.org), but Greenkeeper will work with every other CI service as well.
+Since we didn’t receive a CI status on the ${branchLink(fullName)} branch, it’s possible that you don’t have CI set up yet.
+We recommend using:
+- [CircleCI](https://circleci.com)
+- [Travis CI](https://travis-ci.org)
+- [CodeShip](https://codeship.com)
+- [Azure Pipelines](https://azure.microsoft.com/en-us/services/devops/pipelines)
+- [TeamCity](https://www.jetbrains.com/teamcity)
+- [Buddy](https://buddy.works)
+- [AppVeyor](https://www.appveyor.com)
+But Greenkeeper will work with every other CI service as well.
 
 If you _have_ already set up a CI for this repository, you might need to check how it’s configured. Make sure it is set to run on all new branches. If you don’t want it to run on absolutely every branch, you can whitelist branches starting with ${md.code('greenkeeper/')}.