[README] add codesandbox demo (#24)

README.md

@@ -2,7 +2,7 @@
 
 [![](https://travis-ci.com/kyle-west/dragon-router.svg?branch=master)](https://travis-ci.com/kyle-west/dragon-router/branches)
 [![](https://img.shields.io/npm/v/dragon-router.svg)](https://www.npmjs.com/package/dragon-router)
-[![](https://img.shields.io/npm/dt/dragon-router.svg)](https://www.npmjs.com/package/dragon-router)
+[![](https://img.shields.io/npm/dw/dragon-router.svg)](https://www.npmjs.com/package/dragon-router)
 
 Dragon Router is an ExpressJS-like client side router built from the ground up 
 on [debuggability](#debugging) and [simplicity](#derived-subpaths).
@@ -14,6 +14,10 @@ overwriting the need for a full page refresh on user navigation. Add it to your
 npm install --save dragon-router
 ```
 
+### Try the demo: 
+
+[![Edit dragon-router-demo](https://codesandbox.io/static/img/play-codesandbox.svg)](https://codesandbox.io/s/dragon-router-demo-7os1x?fontsize=14&hidenavigation=1&theme=dark)
+
 # Setup and usage
 
 ### ES6

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "dragon-router",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "An ExpressJS-like client side router built from the ground up on debuggability and simplicity",
   "authors": [
     "Kyle West <kyle-west@github.com>"

package.json

@@ -1,6 +1,6 @@
 {
   "name": "dragon-router",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "An ExpressJS-like client side router built from the ground up on debuggability and simplicity",
   "author": {
     "name": "Kyle West",