Fix email in README.md.
Fix email in README.md.

fjl/gocode,mem/gocode,thousandhigh/gocode,thousandhigh/gocode,thousandhigh/gocode,artnez/gocode,kerr-huang/Gocode,TheBB/gocode,lmh008/gocode,beni55/gocode,fjl/gocode,mdempsky/gocode,beni55/gocode,beni55/gocode,mattn/gocode,fjl/gocode,kerr-huang/Gocode,mem/gocode,syohex/gocode,toqueteos/LightTable-Go,nsf/gocode,nsf/gocode,beni55/gocode,suncycheng/gocode,MerlinDMC/gocode,ghiden/gocode,mdempsky/gocode,syohex/gocode,mdempsky/gocode,MerlinDMC/gocode,syohex/gocode,syohex/gocode,artnez/gocode,mattn/gocode,mem/gocode,TheBB/gocode,lmh008/gocode,suncycheng/gocode,kerr-huang/Gocode,lmh008/gocode,thousandhigh/gocode,MerlinDMC/gocode,louiseGrandjonc/gocode,ghiden/gocode,ghiden/gocode,MerlinDMC/gocode,suncycheng/gocode,lmh008/gocode,suncycheng/gocode,fjl/gocode,mattn/gocode,ghiden/gocode,TheBB/gocode,louiseGrandjonc/gocode,artnez/gocode,nsf/gocode,mem/gocode,artnez/gocode,TheBB/gocode,kerr-huang/Gocode,mattn/gocode,louiseGrandjonc/gocode,louiseGrandjonc/gocode,nsf/gocode,toqueteos/LightTable-Go