Ruby / Java: Fixed possible division by zero in CSSStats
Ruby / Java: Fixed possible division by zero in CSSStats

Closes #86

koraktor/steam-condenser-ruby,hcool/steam-condenser-ruby,Arie/steam-condenser-ruby,kickback/steam-condenser-ruby,bfosberry/steam-condenser-ruby,jpalumickas/steam-condenser-ruby