diff --git a/AltoRouter.php b/AltoRouter.php
index ee0759b..840a694 100644
--- a/AltoRouter.php
+++ b/AltoRouter.php
@@ -22,8 +22,8 @@ class AltoRouter {
 	  * @param array $matchTypes
 	  */
 	public function __construct( $routes = array(), $basePath = '', $matchTypes = array() ) {
-		$this->basePath = $basePath;
-		$this->matchTypes = array_merge($this->matchTypes, $matchTypes);
+		$this->setBasePath($basePath);
+		$this->addMatchTypes($matchTypes);
 
 		foreach( $routes as $route ) {
 			call_user_func_array(array($this,'map'),$route);
@@ -39,11 +39,11 @@ class AltoRouter {
 	}
 
 	/**
-	 * Add a new named match type. It uses array_merge so keys can be overwritten.
+	 * Add named match types. It uses array_merge so keys can be overwritten.
 	 *
-	 * @param array $matchType The key is the name and the value is the regex.
+	 * @param array $matchTypes The key is the name and the value is the regex.
 	 */
-	public function addMatchType($matchTypes) {
+	public function addMatchTypes($matchTypes) {
 		$this->matchTypes = array_merge($this->matchTypes, $matchTypes);
 	}
 
diff --git a/AltoRouterTest.php b/AltoRouterTest.php
index 16199a0..0474f8a 100644
--- a/AltoRouterTest.php
+++ b/AltoRouterTest.php
@@ -268,7 +268,7 @@ class AltoRouterTest extends PHPUnit_Framework_TestCase
 
 	public function testMatchWithCustomNamedRegex()
 	{
-		$this->router->addMatchType(array('cId' => '[a-zA-Z]{2}[0-9](?:_[0-9]++)?'));
+		$this->router->addMatchTypes(array('cId' => '[a-zA-Z]{2}[0-9](?:_[0-9]++)?'));
 		$this->router->map('GET', '/bar/[cId:customId]', 'bar_action', 'bar_route');
 		
 		$this->assertEquals(array(
diff --git a/README.md b/README.md
index 9d82dbc..483cf19 100644
--- a/README.md
+++ b/README.md
@@ -30,28 +30,49 @@ $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
-    [i:id]               // Match an integer as 'id'
-    [a:action]           // Match alphanumeric characters as 'action'
-    [h:key]              // Match hexadecimal characters as 'key'
-    [:action]            // Match anything up to the next / or end of the URI as 'action'
-    [create|edit:action] // Match either 'create' or 'edit' as 'action'
-    [*]                  // Catch all (lazy, stops at the next trailing slash)
-    [*: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
-    @/(?[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
-
+*                    // Match all request URIs
+[i]                  // Match an integer
+[i:id]               // Match an integer as 'id'
+[a:action]           // Match alphanumeric characters as 'action'
+[h:key]              // Match hexadecimal characters as 'key'
+[:action]            // Match anything up to the next / or end of the URI as 'action'
+[create|edit:action] // Match either 'create' or 'edit' as 'action'
+[*]                  // Catch all (lazy, stops at the next trailing slash)
+[*: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**
+
+```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)