Update React Dependency to 15.1.0

Author: sthodup1

public/index.html

@@ -5,8 +5,8 @@
     <title>React Tutorial</title>
     <!-- Not present in the tutorial. Just for basic styling. -->
     <link rel="stylesheet" href="css/base.css" />
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.0.1/react.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.0.1/react-dom.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.6.16/browser.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/remarkable/1.6.2/remarkable.min.js"></script>