Updated README to include addMatchTypes

README.md

@@ -30,7 +30,8 @@ $router->generate('users_show', array('id' => 5));
 
 ```
 
-You can use the following limits on your named parameters. AltoRouter will create the correct regexes for you.
+**You can use the following limits on your named parameters. AltoRouter will create the correct regexes for you.**
+
 ```php
 *                    // Match all request URIs
 [i]                  // Match an integer
@@ -43,15 +44,35 @@ You can use the following limits on your named parameters. AltoRouter will creat
 [*:trailing]         // Catch all as 'trailing' (lazy)
 [**:trailing]        // Catch all (possessive - will match the rest of the URI)
 .[:format]?          // Match an optional parameter 'format' - a / or . before the block is also optional
+```
 
-Some more complicated examples
+**Some more complicated examples**
+
+```php
 @/(?[A-Za-z]{2}_[A-Za-z]{2})$ // custom regex, matches language codes like "en_us" etc.
 /posts/[*:title][i:id]        // Matches "/posts/this-is-a-title-123"
 /output.[xml|json:format]?    // Matches "/output", "output.xml", "output.json"
 /[:controller]?/[:action]?    // Matches the typical /controller/action format
-
 ```
 
+**The character before the colon (the 'match type') is a shortcut for one of the following regular expressions**
+
+```php
+'i'  => '[0-9]++'
+'a'  => '[0-9A-Za-z]++'
+'h'  => '[0-9A-Fa-f]++'
+'*'  => '.+?'
+'**' => '.++'
+''   => '[^/\.]++'
+```
+
+**New match types can be added using the `addMatchTypes()` method**
+
+```php
+$router->addMatchTypes(array('cId' => '[a-zA-Z]{2}[0-9](?:_[0-9]++)?'));
+```
+
+
 ## Contributors
 - [Danny van Kooten](https://github.com/dannyvankooten)
 - [Koen Punt](https://github.com/koenpunt)