Add an autoloader to use the snappy standalone.

README.markdown

@@ -11,6 +11,8 @@ You will have to download wkhtmltopdf 0.10.0 >= rc2 in order to use Snappy.
 ```php
 <?php
 
+require_once '/path/to/snappy/src/autoload.php';
+
 use Knp\Snappy\Pdf;
 
 $snappy = new Pdf('/usr/local/bin/wkhtmltopdf');

phpunit.xml.dist

@@ -9,7 +9,7 @@
          processIsolation="false"
          stopOnFailure="false"
          syntaxCheck="false"
-         bootstrap="test/bootstrap.php"
+         bootstrap="src/autoload.php"
 >
     <testsuites>
         <testsuite name="Snappy Test Suite">

src/autoload.php

@@ -0,0 +1,21 @@
+<?php
+
+/**
+ * Simple autoloader that follow the PHP Standards Recommendation #0 (PSR-0)
+ * @see https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md for more informations.
+ *
+ * Code inspired from the SplClassLoader RFC
+ * @see https://wiki.php.net/rfc/splclassloader#example_implementation
+ */
+spl_autoload_register(function($className) {
+    $package = 'Knp\\Snappy';
+    $className = ltrim($className, '\\');
+    if (0 === strpos($className, $package)) {
+        $fileName = __DIR__ . DIRECTORY_SEPARATOR . str_replace('\\', DIRECTORY_SEPARATOR, $className) . '.php';
+        if (is_file($fileName)) {
+            require $fileName;
+            return true;
+        }
+    }
+    return false;
+});