add OC_GROUP::createGroup();

lib/group.php

@@ -124,4 +124,13 @@ class OC_GROUP {
 	public static function getGroups() {
 		return self::$_backend->getGroups();
 	}
+	
+	/**
+	 * create a new group
+	 *
+	 * @param  string  $name   Name of the group
+	 */
+	public static function createGroup($name) {
+		return self::$_backend->createGroup($name);
+	}
 }