Merge pull request jupyter#181 from jinmehta13/console-welcome-message

added console message in head.html welcoming developers to site

Author: Carreau

_includes/head.html

@@ -43,5 +43,6 @@
       ga('send', 'pageview');
 
     </script>
+    <script>console.log('Welcome to Project Jupyter! Explore the various tools available and their corresponding documentation. If you are interested in contributing to the platform, please visit the community resources section at http://jupyter.org/community.html.')</script>
 </head>