Add books page

app/decorators/books/decorator.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: false
+
+# auto_register: false
+
+module Adamantium
+  module Decorators
+    module Books
+      class Decorator < SimpleDelegator
+        def display_published_at
+          published_at.strftime("%e %B, %Y")
+        end
+
+        def machine_published_at
+          published_at.rfc2822
+        end
+
+        def syndicated?
+          !syndication_sources.empty?
+        end
+
+        def template_type
+          :book
+        end
+      end
+    end
+  end
+end