Deleted artifacts on posts

_site/blog/hello-world/index.html

@@ -10,10 +10,6 @@
     <meta name="description" content="GDG DevFest is a set of events all around the world">
     <meta name="keywords" content="event, gdg, devfest, google, programming, android, chrome, developers, lviv">
     <link rel="canonical" href="http://gdg-x.github.io">
-    <!-- Social: Google+ / Schema.org  -->
-    <meta itemprop="name" content="Hello World!">
-    <meta itemprop="description" content="GDG DevFest is a set of events all around the world">
-    <meta itemprop="image" content="http://gdg-x.github.io/zeppelin/img/seo/sharing-google-plus.png">
     <!-- Social: Twitter -->
     <meta name="twitter:card" content="summary">
     <meta name="twitter:site" content="@DevFest">
@@ -28,7 +24,6 @@
     <meta property="og:image" content="http://gdg-x.github.io/zeppelin/img/seo/sharing-facebook.png" />
     <meta property="og:description" content="GDG DevFest is a set of events all around the world" /> 
     
-
     <title>Hello World! &bull; GDG DevFest Season 2014</title>
     <link rel="shortcut icon" href="/zeppelin/img/favicons/favicon.ico">
     <link rel="apple-touch-icon" sizes="152x152" href="/zeppelin/img/favicons/apple-touch-icon-152x152.png">
@@ -334,7 +329,7 @@ the final missing parts to the biggest Google related event in Ukraine - <a href
 		<!-- Please don't delete this line-->
 		<div class="col-md-6">
 			<p class="copyright">
-				&copy; 2014 Designed and created by <a href="https://plus.google.com/+OlehZasadnyy/about">Oleh Zasadnyy</a> &middot; <a href="http://lviv.gdg.org.ua" target="_blank">GDG Lviv</a>
+				&copy; 2014 Based on <a href="https://github.com/gdg-x/zeppelin" target="_blank">Project Zeppelin</a>. Designed and created by <a href="https://plus.google.com/+OlehZasadnyy/about" target="_blank">Oleh Zasadnyy</a> &middot; <a href="http://lviv.gdg.org.ua" target="_blank">GDG Lviv</a>
 			</p>
 		</div>
 	</div>