Update README.md

Either ts-loader or babel-loader to bundle workers didn't work properly so I transpiled them by hand

README.md

@@ -12,15 +12,19 @@ export NODE_OPTIONS="--openssl-legacy-provider"
 # install dependencies
 $ yarn install
 
-# serve with hot reload at localhost:3000
-$ yarn dev
-
 # build for production and launch server
 $ yarn build
 $ yarn start
 
 # generate static project
 $ yarn generate
+
+# serve with hot reload at localhost:3000
+# should do yarn build first if worker files are changed
+$ yarn dev
+
+# update cached events from node & subgraphs
+$ yarn update:events
 ```
 
 For detailed explanation on how things work, check out [Nuxt.js docs](https://nuxtjs.org).