Added a footer link to edit the docs

website/source/layouts/layout.erb

@@ -51,12 +51,15 @@
 				<div class="col-md-12">
 					<ul>
 						<li class="packer"><a href="/">Packer</a></li>
-            <li>
-						  A <a href="http://www.hashicorp.com/">HashiCorp</a> project.
-            </li>
-					  <a href="http://www.hashicorp.com">
-						 <li class="pull-right hashi-logo">&nbps;</li>
-					  </a>
+						<li>
+							A <a href="http://www.hashicorp.com/">HashiCorp</a> project.
+						</li>
+						<li>
+							<a href="https://github.com/mitchellh/packer/blob/master/website/source/<%= current_page.path %>.markdown">Edit this page</a>
+						</li>
+						<a href="http://www.hashicorp.com">
+							<li class="pull-right hashi-logo">&nbps;</li>
+						</a>
 					</ul>
 				</div>
 			</div>