Local testing notes and start user join event handling

.gitignore

@@ -33,4 +33,6 @@ jspm_packages
 .npmrc
 .yarnrc
 
+# local testing
 .env
+ngrok*

README.md

@@ -7,3 +7,9 @@ Create a `.env` file and populate it with
 SLACK_SIGNING_SECRET=<>
 SLACK_BOT_TOKEN=<>
 ```
+
+You'll want to create a personal slack workspace to do your testing in. In addition, install [ngrok](https://ngrok.com/) or something similar to send requests to your local environment. 
+
+[Local development with ngrok](https://api.slack.com/tutorials/tunneling-with-ngrok)
+
+Start ngrok: `./ngrok http 3000`

src/index.ts

@@ -16,6 +16,12 @@ const app = new App({
     console.log(`SSEBot started at ${new Date().toUTCString()} (UTC)`);
 })();
 
+// when a new user joins
+app.event('team_join', async ({ event, context }) => {
+    // @ts-ignore
+    console.log(`new person joined: ${event.user.id}`);
+});
+
 // for @bot messages
 app.event('app_mention', async ({ event, context }) => {
     try {