Update index.html

Solve the problem that: When open the index.html by IE11, contents of the footer aren't top-align.

Author: Fental

public/index.html

@@ -64,12 +64,12 @@ <h2>Arrow configuration</h2>
     </div>
 
     <footer id='footer'>
-      &copy; 2012 By <a href='http://icreateui.com'>Simon Højberg</a>
-      &middot;
-      Follow me on twitter: <a href='https://twitter.com/shojberg'>@shojberg</a>
-      &middot;
-      Checkout the source on <a href='https://github.com/hojberg/cssarrowplease'>github</a>
-      &middot;
+      <span>&copy; 2012 By <span/><a href='http://icreateui.com'>Simon Højberg</a>
+      <span>&middot;
+      Follow me on twitter: <span/><a href='https://twitter.com/shojberg'>@shojberg</a>
+      <span>&middot;
+      Checkout the source on <span/><a href='https://github.com/hojberg/cssarrowplease'>github</a>
+      <span>&middot;<span/>
       <a href="https://twitter.com/share" class="twitter-share-button" data-url="http://cssarrowplease.com" data-text="Simple way to create CSS arrows for tooltips and the like" data-via="shojberg">Tweet</a>
     </footer>