License, minor README fixes

peronEther.sol → destileria2.sol

 /*
-Copyright 2019 de la Dirección General de Sistemas Informáticos – Secretaría Legal y Técnica - Nación.
+Copyright 2020 de la Dirección General de Sistemas Informáticos – Secretaría Legal y Técnica - Nación.
 
 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 2 of the License, or (at your option) any later version.
 
@@ -7,7 +7,7 @@ This program is distributed in the hope that it will be useful, but WITHOUT ANY
 
 You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/
 */
-pragma solidity ^0.4.11;
+pragma solidity >0.4;
 
 
 contract PeronEther {