Merge pull request #2301 from TheTomThorogood/short_year_permalink

lib/jekyll/post.rb

@@ -225,6 +225,7 @@ module Jekyll
         :i_month     => date.strftime("%m").to_i.to_s,
         :categories  => (categories || []).map { |c| c.to_s }.join('/'),
         :short_month => date.strftime("%b"),
+        :short_year  => date.strftime("%y"),
         :y_day       => date.strftime("%j"),
         :output_ext  => output_ext
       }

site/docs/permalinks.md

@@ -67,6 +67,14 @@ permalink is defined as `/:categories/:year/:month/:day/:title.html`.
         <p>Day from the Post’s filename without leading zeros.</p>
       </td>
     </tr>
+    <tr>
+      <td>
+        <p><code>short_year</code></p>
+      </td>
+      <td>
+        <p>Year from the Post’s filename without the century.</p>
+      </td>
+    </tr>
     <tr>
       <td>
         <p><code>title</code></p>