Add test post to demonstrate issue with tags with incorrect cases

Author: hazzik

test/source/_posts/2014-10-01-post-with-incorrect-cased-tag.md

@@ -0,0 +1,6 @@
+---
+title: Tagged post
+tags: ["test tag", Tagged]
+---
+
+This is a post with tags in incorect case

test/test_jekyll_archives.rb

@@ -120,7 +120,7 @@ class TestJekyllArchives < Minitest::Test
     end
 
     should "populate the {{ site.archives }} tag in Liquid" do
-      assert_equal 12, read_file("length.html").to_i
+      assert_equal 14, read_file("length.html").to_i
     end
   end