ENYO-2483: Implemented round up/down feature

Enyo-DCO-1.1-Signed-off-by: Yves Del Medico <yves.del-medico@hp.com>
Merge branch 'master' of github.com:HPACS/TipCalc into ENYO-2483
Merge pull request #2 from HPACS/ENYO-2483

ENYO-2483: Implemented round up/down feature