add overview diagram

README.md

@@ -21,6 +21,10 @@ HackerNews clone built with Vue 2.0 + vue-router + vuex, with server-side render
   - CSS extraction for production
 - Real-time List Updates with FLIP Animation
 
+## Architecture Overview
+
+<img width="973" alt="screen shot 2016-08-11 at 6 06 57 pm" src="https://cloud.githubusercontent.com/assets/499550/17607895/786a415a-5fee-11e6-9c11-45a2cfdf085c.png">
+
 ## Build Setup
 
 **Requires Node.js 6+**