Fixed autoload path

Author: JakubOnderka

parallel-lint.php

@@ -39,7 +39,27 @@ function showOptions()
     exit;
 }
 
-require_once __DIR__ . '/vendor/autoload.php';
+$files = array(
+  __DIR__ . '/../../autoload.php',
+  __DIR__ . '/vendor/autoload.php'
+);
+
+$autoloadFileFound = false;
+foreach ($files as $file) {
+    if (file_exists($file)) {
+        require $file;
+        $autoloadFileFound = true;
+        break;
+    }
+}
+
+if (!$autoloadFileFound) {
+    die(
+      'You need to set up the project dependencies using the following commands:' . PHP_EOL .
+      'curl -s http://getcomposer.org/installer | php' . PHP_EOL .
+      'php composer.phar install' . PHP_EOL
+    );
+}
 
 try {
     $manager = new PhpParallelLint\Manager;
@@ -53,4 +73,4 @@ function showOptions()
 } catch (Exception $e) {
     echo $e->getMessage(), PHP_EOL;
     die(FAILED);
-}
+}