Destroy previous vidyard player before creating new one

Author: schipiga

src/players/Vidyard.js

@@ -18,6 +18,10 @@ export default class Vidyard extends Component {
   load (url, isReady) {
     const { config, onError, onDuration } = this.props
     const id = url && url.match(MATCH_URL_VIDYARD)[1]
+    if (this.player) {
+      this.stop()
+      delete this.player
+    }
     getSDK(SDK_URL, SDK_GLOBAL, SDK_GLOBAL_READY).then(Vidyard => {
       if (!this.container) return
       Vidyard.api.addReadyListener((data, player) => {