add sass support

Change-Id: I90b27b1c574091a12a669b23b97a7730aad6c856
diff --git a/client/src/index.js b/client/src/index.js
index 42d2abd..b39e2f5 100644
--- a/client/src/index.js
+++ b/client/src/index.js
@@ -1,6 +1,6 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
-import './index.css';
+import './index.scss';
 import App from './App';
 //import * as serviceWorker from './serviceWorker';