The purpose of this repo is to provide an example of how to use slackhook to integrate teamcity with Slack.
It is very basic but gives enough of a guide on how to set it up.
You can run this example on Heroku for free, which is what I would recommend.
You'll need to install the web hooks plugin for Teamcity, which you can find here.
You then just need to configure the webhooks option for your build to post to your heroku app at /hooks/teamcity