Revert "fix: standalone build (#32)" (#40)

This reverts commit 359af25.

packages/griffith-standalone/src/index.js

@@ -3,21 +3,13 @@ import ReactDOM from 'react-dom'
 import Player from 'griffith'
 
 export function createPlayer(target) {
-  function render(props) {
-    ReactDOM.render(<Player {...props} />, target)
-  }
-
-  render()
-
   return {
     render(props) {
-      render(props)
-      return this
+      ReactDOM.render(<Player {...props} />, target)
     },
 
     dispose() {
-      ReactDOM.render(null, target)
-      return this
+      ReactDOM.unmountComponentAtNode(target)
     },
   }
 }