update readme

src/prog/dashboard3/README.md

@@ -1,3 +1,30 @@
 # Quasar App
 
 > WIP
+
+store to access data.
+
+https://quasar-framework.org/guide/app-vuex-store.html
+
+<template>
+  <div>
+    <q-toggle v-model="drawerState" />
+  </div>
+</template>
+
+<script>
+export default {
+  computed: {
+    drawerState: {
+      get () {
+        return this.$store.state.showcase.drawerState
+      },
+      set (val) {
+        this.$store.commit('showcase/updateDrawerState', val)
+      }
+    }
+  }
+}
+
+## example ....
+https://appdividend.com/2018/05/08/vuex-axios-get-request-tutorial-with-example/