In the page footer, add a link to the wiki

Signed-off-by: Federico Mena Quintero <federico@gnome.org>

app/views/layouts/_footer.html.haml

@@ -7,6 +7,8 @@
         = link_to "License", "https://github.com/Growstuff/growstuff/blob/dev/LICENSE.txt"
       %li
         = link_to "Github", "https://github.com/Growstuff/"
+      %li
+        = link_to "Wiki", "http://wiki.growstuff.org"
       %li
         = link_to "Mailing list", "http://lists.growstuff.org/mailman/listinfo/discuss"
       %li

spec/views/layouts/_footer_spec.rb

@@ -10,6 +10,7 @@ describe 'layouts/_footer.html.haml', :type => "view" do
         rendered.should contain 'About'
         rendered.should contain 'License'
         rendered.should contain 'Github'
+        rendered.should contain 'Wiki'
         rendered.should contain 'Mailing list'
         rendered.should contain 'Community Guidelines'
     end