email validation. Closes #309
email validation. Closes #309

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