Added GPLv3 license and CoC

CoC.md

@@ -0,0 +1,7 @@
+# Go Fuck Yourself
+
+Offended? Go away. We don't need people who are offended because of a stranger on the internet.  
+Not offended? You're welcome to contribute.
+
+© Copyright 2015 [WTFCoC Consortium Committee](https://github.com/mniip/wtfcoc).
+

README.md

@@ -1,12 +1,17 @@
-**aksento** - моделирование древнегреческого ударения
+# Description
+
+https://aksento.glossa.info/
+
+This tool displays ancient Greek phrases on the music stand within one quintum
+according to the rules of musical accent.
+
+# License
 
-## Лицензия
     Copyright (C) 2017-2018, Maxim Lihachev, <envrm@yandex.ru>
 
-    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 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, version 3.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -16,17 +21,13 @@
     You should have received a copy of the GNU General Public License
     along with this program. If not, see <http://www.gnu.org/licenses/>.
 
-## Описание
-   Сценарий отображает древнегреческие фразы на нотном стане в пределах одной
-   квинты согласно правилам музыкального ударения.
+# Contribution
 
-   https://aksento.glossa.info/
+The project requires comprehensive testing. If you find an error or have a
+comment or suggestion, send a message to the e-mail address given on
+https://glossa.info page.
 
-## Помощь
-   Проекту требуется всестороннее тестирование. Если вы найдёте ошибку или у
-   вас появится замечание или предложение, отправьте сообщение по адресу,
-   указанному на странице https://glossa.info/.
+# Version
 
-## Версия
 1.0
 

js/aksento.js

@@ -1,9 +1,8 @@
 // Copyright (C) 2017-2018, Maxim Lihachev, <envrm@yandex.ru>
 //
-// 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 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, version 3.
 //
 // This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of