Update README

hisasann · hisasann · commit 3154e1c4f6b3 · 2019-04-10T16:04:31.000+09:00
diff --git a/README.md b/README.md
@@ -24,6 +24,12 @@ npm install
 $ yarn run dev
 ```
 
+and run mock server
+
+```bash
+$ node ./tools/server.js
+```
+
 ## build for production and launch server
 
 ```bash
