Merge pull request #31 from jullianonascimento/master

fixes infufg/sade#22
fixes infufg/sade#27
Merge pull request #32 from serrgio/master

fixes infufg/sade#27
fixes infufg/SADE#24
Merge pull request #33 from luizhenriquees/master

fixes infufg/SADE#24
fixes infufg/sade#23
Merge branch 'master' of https://github.com/infufg/SADE