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

@@ -3,10 +3,9 @@
 ##Лицензия
     Copyright (C) 2011-2019, 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

wav-info.hs

@@ -2,10 +2,9 @@
 
 -- Copyright (C) 2011-2019, 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