updated gemspec
updated gemspec

Signed-off-by: Sandro Duarte <78a0d62e7d72a8b06c63b4c4cf26ff15d13fe54a@gmail.com>
driehuis/odf-report,dsthode/odf-report,yeti-switch/odf-report,tdenovan/odf-report,sandrods/odf-report