Add vue-accordion (vuejs#1130)

zeratulmdq · kazupon · commit eadfe4ae33dc · 2017-05-13T01:08:23.000+09:00
diff --git a/README.md b/README.md
@@ -554,6 +554,7 @@ Tooltips / popovers
 ### Menu
 
  - [vue-side-nav](https://github.com/vue-comps/vue-side-nav) - Side-nav.
+ - [vue-accordion](https://github.com/zeratulmdq/vue-accordion) - Simple accordion nav menu component for Vue.js.
 
 ### Carousel
 
