Resolve "Introduce PSR-4 autoloading"

Closes #12

classes/modules/adminModule.php

@@ -2,6 +2,7 @@
 
 namespace uib\ub\loadspeakr\modules;
 
+use ARC2;
 use uib\ub\loadspeakr\Endpoint;
 use uib\ub\loadspeakr\HTTPStatus;
 use uib\ub\loadspeakr\Utils;
@@ -332,8 +333,6 @@ class AdminModule extends abstractModule
                     HTTPStatus::send409("No file was included in the request");
                 } else {
                     $ng = (isset($_POST['namedgraph'])) ? $_POST['namedgraph'] : 'default';
-
-                    require_once __DIR__ . '/../../vendor/semsol/arc2/ARC2.php';
                     $parser = ARC2::getRDFParser();
                     $parser->parse($_FILES["file"]["tmp_name"]);
                     $triples = $parser->getTriples();