add license header

src/com/owncloud/android/utils/MimeType.java

@@ -1,7 +1,25 @@
+/**
+ *   Nextcloud Android client application
+ *
+ *   Copyright (C) 2016 Nextcloud
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License version 2+,
+ *   as published by the Free Software Foundation.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.owncloud.android.utils;
 
 /**
- * Created by scherzia on 13.07.2016.
+ * Class containing the mime types.
  */
 public class MimeType {
     public static final String DIRECTORY = "DIR";