Merge pull request 'Add liveness check endpoint' (#1) from feature/health_check_endpoint into master

Reviewed-on: #1

README.md

@@ -1,3 +1,30 @@
-## [MOVED] hal8000
+## hal8000
 
-This repo has been moved to our Gitea instance: https://gitea.kosmos.org/kosmos/hal8000
+hal8000 is a chat bot built on the [Hubot](https://hubot.github.com/)
+framework. It's currently running in some channels on Freenode.
+
+### Running hal8000 locally
+
+    npm start
+
+### Incoming webhooks in development
+
+With [ngrok](https://ngrok.com) installed (and the ngrok binary in your PATH),
+you can open an HTTP tunnel with:
+
+    npm run ngrok
+
+### Configuration
+
+`run.sh` (which is used for `npm start`) has some default values for the
+required ENV vars. Change it according to your needs, or use custom ENV vars
+with the commands.
+
+### Deployment
+
+hal8000 is deployed by running Chef Zero against `barnard.kosmos.org` with the
+cookbooks from our [Gitea repo](https://gitea.kosmos.org/kosmos/chef).
+
+### House Rules
+
+[Contributor Code of Conduct](http://contributor-covenant.org/version/1/2/0/) (TL;DR: Be excellent to each other.)

scripts/health.js

@@ -0,0 +1,5 @@
+module.exports = function (robot) {
+  robot.router.get('/health/live', (req, res) => {
+    res.send('OK');
+  });
+}