README: add instruction to run yarn build

For now yarn build is needed, but we want to get rid of that soon
2020-03-04 13:18:07 +01:00
parent 6f09e99d56
commit ab5d6d6ac2
1 changed files with 2 additions and 0 deletions
@@ -51,6 +51,8 @@ $ cd frontend

 $ yarn # may take a while

+$ yarn build
+
 $ yarn start
 ```