Added links to the 'Rails Initialization Guide', marked as a work in progress

railties/guides/source/index.html.erb

@@ -134,6 +134,10 @@ Ruby on Rails Guides
 <%= guide('Asset Pipeline', 'asset_pipeline.html') do %>
   <p>This guide documents the asset pipeline.</p>
 <% end %>
+
+<%= guide('The Rails Initialization Process', 'initialization.html', :work_in_progress => true) do %>
+  <p>This guide explains the internals of the Rails initialization process as of Rails 3.1</p>
+<% end %>
 </dl>
 
 <h3>Extending Rails</h3>

railties/guides/source/layout.html.erb

@@ -72,6 +72,7 @@
               <dd><a href="command_line.html">Rails Command Line Tools and Rake Tasks</a></dd>
               <dd><a href="caching_with_rails.html">Caching with Rails</a></dd>
               <dd><a href="asset_pipeline.html">Asset Pipeline</a></dd>
+							<dd><a href="initialization.html">Rails Initialization Process</a></dd>
 
               <dt>Extending Rails</dt>
               <dd><a href="plugins.html">The Basics of Creating Rails Plugins</a></dd>