add wavesurfer element, fix readme

Author: kevin-chau

README.md

@@ -25,7 +25,7 @@ To install TReactr, use:
 This is equivalent to `yarn install` or `npm install`.
 
 ## Run:
-To start a3 dev server and launch TReactr in your browser, use:
+To start a dev server and launch TReactr in your browser, use:
 
   yarn start
 

src/components/SoundcloudDeck/SoundcloudDeck.js

@@ -1,5 +1,6 @@
 import React from 'react';
 import ReactPlayer from 'react-player';
+import Wavesurfer from 'react-wavesurfer';
 import withStyles from 'isomorphic-style-loader/lib/withStyles';
 import PropTypes from 'prop-types';
 import Deck from '../Deck';
@@ -129,6 +130,9 @@ class SoundcloudDeck extends Deck {
           }}
           volume={this.props.volume / 127}
         />
+        <Wavesurfer
+          audioFile={this.props.url}
+        />
       </div>
     );
   }