Fixes tests to account for new info.md file

test/test_filters.rb

@@ -475,7 +475,7 @@ class TestFilters < JekyllUnitTest
               g["items"].is_a?(Array),
               "The list of grouped items for '' is not an Array."
             )
-            assert_equal 13, g["items"].size
+            assert_equal 14, g["items"].size
           end
         end
       end

test/test_site.rb

@@ -191,6 +191,7 @@ class TestSite < JekyllUnitTest
         humans.txt
         index.html
         index.html
+        info.md
         main.scss
         main.scss
         properties.html