Put link to YouTube on Footer

Author: yasulab

app/views/shared/_footer.html.erb

@@ -15,6 +15,8 @@
 						    aria-hidden="true"></i></a>
     <a href="https://twitter.com/CoderDojoJapan"><i class="fa fa-twitter fa-3x fa-fw"
 						    aria-hidden="true"></i></a>
+    <a href="https://www.youtube.com/channel/UCal5GuoCDCMDQe07w69TuJA"><i class="fa fa-youtube fa-3x fa-fw"
+						    aria-hidden="true"></i></a>
     <a href="http://dojocast.coderdojo.jp/"><i class="fa fa-podcast fa-3x fa-fw"
 					            aria-hidden="true"></i></a>
   </h2>