Remove references to tweetMachine

Author: ashawley

_includes/footer.html

@@ -53,7 +53,6 @@
     <!-- jquery js -->
     <script src="{{ site.baseurl }}/resources/js/vendor/jquery-1.8.3.min.js" type="text/javascript" ></script>
     <script src="{{ site.baseurl }}/resources/js/vendor/jquery.stellar.min.js" type="text/javascript" ></script>
-    <script src="{{ site.baseurl }}/resources/js/vendor/tweetMachine.min.js" type="text/javascript" ></script>
 
     <!-- modernizr js -->
     <script src="{{ site.baseurl }}/resources/js/vendor/modernizr-2.6.2-respond-1.1.0.min.js" type="text/javascript" ></script>