Moved Loader class

Removed Loader class from core package and 
moved it to the root of the library.
Updated examples with the new loader.

examples/command_sequence.php

@@ -14,8 +14,8 @@
 set_include_path(realpath(__DIR__ . '/../lib') . PATH_SEPARATOR . get_include_path());
 
 // Register the Steel autoloader
-require 'steel/core/Loader.php';
-\steel\core\Loader::registerAutoload();
+require 'steel/Loader.php';
+\steel\Loader::registerAutoload();
 
 // Create a new sequence
 $sequence = new \steel\command\Sequence();

lib/steel/Loader.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * Loader.php
+ * 
+ * @package     Steel
+ * @copyright   Copyright (c) 2010 Mattijs Hoitink <mattijs@monkeyandmachine.com>
+ * @license     New BSD License - http://github.com/mattijs/Steel/raw/master/LICENSE
+ */
+
+namespace steel\core;
+
+/**
+ * Loader for Steel classes.
+ *
+ * @todo        add class cache
+ * @package     Steel
+ * @author      Mattijs Hoitink <mattijs@monkeyandmachine.com>
+ */
+class Loader
+{
+
+    /**
+     * Autoloader implementation based on the example from
+     * the PHP standards group.
+     * @see http://groups.google.com/group/php-standards/web/psr-0-final-proposal
+     * @param string $className
+     */
+    public static function autoload($className)
+    {
+        $className = ltrim($className, '\\');
+        $fileName  = '';
+        $namespace = '';
+        if ($lastNsPos = strripos($className, '\\')) {
+            $namespace = substr($className, 0, $lastNsPos);
+            $className = substr($className, $lastNsPos + 1);
+            $fileName  = str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
+        }
+        $fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
+
+        require $fileName;
+    }
+
+    /**
+     * Register this class with the autoloading stack.
+     */
+    public static function registerAutoload()
+    {
+        spl_autoload_register(array('self', 'autoload'));
+    }
+
+}