add: martin location block

README.md

@@ -21,6 +21,17 @@
         access_log /var/log/nginx/ppga.access.log;
     }
     ```
+  - add `location` block
+    ```nginx
+    location /martin/ {
+        proxy_pass http://martin:3000/;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection 'upgrade';
+        proxy_set_header Host $host;
+        proxy_cache_bypass $http_upgrade;
+    }
+    ```
 
 ## Clean up
 - delete ./node_modules dirs