Add prod deploy docs (#219)

prod/README.md

@@ -0,0 +1,43 @@
+# prod
+
+_This document describes Fairness' production deployment of Permacoop. It is meant for Fairness team members._
+
+## Deployment
+
+The current deployment process is manual. It is as follows.
+
+1. Connect to the remote server via SSH.
+1. `cd /var/www/permacoop`
+1. Update client and server:
+
+    ```
+    git pull
+    ```
+
+1. Re-build apps:
+
+    ```
+    cd server && npm run build
+    cd client && npm run build
+    ```
+
+1. Restart `pm2` if need be: if `pm2 status` shows an instance as `error`, restart it using:
+
+    ```bash
+    pm2 reload <INSTANCE_ID>
+    ```
+
+## Troubleshooting
+
+### `502 Bad Gateway` after a deploy
+
+If the server responds with `502 Bad Gateway` after deploying, it may be that the client and/or API servers failed to boot.
+
+Restart `pm2`:
+
+```bash
+$ pwd
+/var/www/permacoop
+$ cd server && pm2 start server.config.js
+$ cd client && pm2 start server.config.js
+```