fix for issues/20
fix for issues/20

cesarmarinhorj/joi,danielb2/joi,tpiecora/joi,thethanghn/react-native-joi,olistic/joi-extended,naitsric/joi,lloydbenson/joi,ck-lee/joi,myndzi/joi,bananaoomarang/joi,jagoda/joi,rmoorman/joi,davidbenko9/joi,myndzi/joi,geminiyellow/joi,jeffbski/joi,opyate/joi,pandeysoni/joi,robertherber/joi-extended,pikselpalette/joi