update contact us margin volny#6

Author: chunjy92

_includes/contact.html

@@ -12,7 +12,7 @@ <h2 class="section-heading">Contact Us!</h2>
                 <p>{{ site.email }}</p>
             </a>
         </div>
-        <div class="col-lg-2 col-lg-pull-3 text-center">
+        <div class="col-lg-2 col-lg-offset-2 text-center">
             <a href="https://github.com/{{ site.github_username }}">
             <i class="fa fa-github fa-3x wow bounceIn" data-wow-delay=".1s"></i>
                 <p>{{ site.github_username }}</p>