zsh file completion minimal update
zsh file completion minimal update

-V doesn't exist anymore

also should fix #71 on github

sheeprine/khal,sdx23/khal,geier/khal,pdav/khal,hobarrera/khal,dzoep/khal,sheeprine/khal,sithglan/khal,pimutils/khal,sithglan/khal