[ruby] Stub out --expect option
[ruby] Stub out --expect option

So that it can be used with the recent Vim plugin although extra key
bindings are not available

tomfitzhenry/pkg-fzf,wilywampa/fzf,mhartington/fzf,tomfitzhenry/pkg-fzf,bobpattersonjr/fzf,me-and/fzf,junegunn/fzf,janusnic/fzf,NgaNguyenDuy/fzf,qiemem/fzf,mhartington/fzf,hyiltiz/fzf,bobpattersonjr/fzf,tomfitzhenry/pkg-fzf,mjwestcott/fzf,pokey/fzf,d4ndo/fzf,jebaum/fzf,junegunn/fzf,junegunn/fzf,mjwestcott/fzf,stevenqzhang/fzf,mhartington/fzf,brosander/fzf,hudak/fzf,alerque/fzf,stevenqzhang/fzf,hyiltiz/fzf,qiemem/fzf,alerque/fzf,janusnic/fzf,pokey/fzf,d4ndo/fzf,noscript/fzf,janlazo/fzf,noscript/fzf,fazibear/fzf,noscript/fzf,bobpattersonjr/fzf,NgaNguyenDuy/fzf,janlazo/fzf,me-and/fzf,mjwestcott/fzf,hyiltiz/fzf,gregory-nisbet/fzf,wilywampa/fzf,lululau/fzf,me-and/fzf,qiemem/fzf,infokiller/fzf,hudak/fzf,brosander/fzf,alerque/fzf,brosander/fzf,d4ndo/fzf,jebaum/fzf,jebaum/fzf,infokiller/fzf,fazibear/fzf,infokiller/fzf,lululau/fzf,stuha/wbr-zsh,stevenqzhang/fzf,gregory-nisbet/fzf,janlazo/fzf,fazibear/fzf,hudak/fzf,lululau/fzf,wilywampa/fzf,NgaNguyenDuy/fzf,janusnic/fzf,gregory-nisbet/fzf,pokey/fzf