Revert "Remove unused factory for ReadingGroup"
Revert "Remove unused factory for ReadingGroup"

This reverts commit 7048a0b677ffc7213917a3cb0e011309a2f2cb8a.

Signed off by: Heitor Reis <marcheing@gmail.com>

mezuro/prezento,mezuro/prezento,MezuroUNB20151/prezento,MezuroUNB20151/prezento,MezuroUNB20151/prezento,mezuro/prezento