Add license message

README.md

@@ -71,3 +71,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ```
 
 KokoaNLP is licensed under the [GPL 3.0](./LICENSE).
+
+[Materialize](http://materializecss.com/) is licensed under a [MIT License](https://github.com/Dogfalo/materialize/blob/master/LICENSE) by Dogfalo.

demo/scripts/load.js

@@ -1,3 +1,19 @@
+/* KokoaNLP
+Copyright (C) 2018  Seungjae Park
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+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/>. */
+
 onmessage = (e) => {
   const spacingModel = {
     trigramFrequencies: [],