Change namespace to "Ramsey"; closes #48

src/Exception/UnsupportedOperationException.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * This file is part of the Rhumsaa\Uuid library
+ * This file is part of the Ramsey\Uuid library
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -9,7 +9,7 @@
  * @license http://opensource.org/licenses/MIT MIT
  */
 
-namespace Rhumsaa\Uuid\Exception;
+namespace Ramsey\Uuid\Exception;
 
 /**
  * Thrown to indicate that the requested operation is not supported.