Merge pull request #1 from artezh/patch-1

Update Command.php

Author: pastuhov

src/Command.php

@@ -37,7 +37,7 @@ public static function exec($commandLine, array $params = array())
         }
 
         if ($code !== 0) {
-            throw new \Exception($output);
+            throw new \Exception($output . ' Command line: ' . $commandLine);
         }
 
         return $output;