Add license to README.md

README.md

 # Portal MEC
 
+## License
+
+Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+Departamento de Informatica - Universidade Federal do Parana
+
+This file is part of portalmec.
+
+portalmec is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+portalmec 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 Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
+
 ## Requirements
  * ruby >=2.2
  * rvm