added routing example
diff --git a/user_guide/general/routing.html b/user_guide/general/routing.html
index fca1e3b..e6642fb 100644
--- a/user_guide/general/routing.html
+++ b/user_guide/general/routing.html
@@ -108,7 +108,6 @@
 <p class="important"><strong>Note:</strong> Routes will run in the order they are defined.

 Higher routes will always take precedence over lower ones.</p>

 

-

 <h2>Examples</h2>

 

 <p>Here are a few routing examples:</p>

@@ -119,10 +118,12 @@
 <code>$route['blog/joe'] = "blogs/users/34";</code>

 <p>A URL containing the segments blog/joe will be remapped to the "blogs" class and the "users" method.  The ID will be set to "34".</p>

 

-

 <code>$route['product/:any'] = "catalog/product_lookup";</code>

 <p>A URL with "product" as the first segment, and anything in the second will be remapped to the "catalog" class and the  "product_lookup" method.</p>

 

+<code>$route['product/(:num)'] = "catalog/product_lookup_by_id/$1";</code>

+<p>A URL with "product" as the first segment, and anything in the second will be remapped to the "catalog" class and the "product_lookup_by_id" method passing in the match as a variable to the function.</p>

+

 <p class="important"><strong>Important:</strong> Do not use leading/trailing slashes.</p>

 

 <h2>Regular Expressions</h2>