Adds generator to reformat [%card] into annotated card urls.

resolves #7.

web/_plugins/cardLinkGenerator.rb

@@ -0,0 +1,24 @@
+module Jekyll
+
+  class CardLinkGenerator < Generator
+
+    def card_link(name, text = '')
+      if text.nil? || !defined?(text) || (text == '') then
+        text = name.split("-").map(&:capitalize).join(" ")
+      end
+      "<a href=\"#{name}\" title=\"The Xebia Essentials [#{name}] Card\">#{text}</a>"
+    end
+
+    def generate(site)
+      site.pages.each do |page|
+        related = Set.new page.data['related']
+        page.content.scan(/\[%([^]]*)\](?:\(([^)]*)\))?/).each do |match|
+          related.add(match[0])
+          page.content = page.content.sub(/\[%([^]]*)\](?:\(([^)]*)\))?/, card_link(match[0], match[1]))
+        end
+        page.data['related'] = related.to_a
+      end
+    end
+  end
+
+end