Quote paths passed to child_process.exec.
Quote paths passed to child_process.exec.

This is necessary on Windows; otherwise you get

    2> 'c:\PROGRAM' is not recognized as an internal or external command,
    2> operable program or batch file.

since Node/npm are in "C:\Program Files (x86)\nodejs", which has spaces in it.

kriskowal/npm,yyx990803/npm,DIREKTSPEED-LTD/npm,TimeToogo/npm,evocateur/npm,haggholm/npm,TimeToogo/npm,lxe/npm,yodeyer/npm,TimeToogo/npm,haggholm/npm,rsp/npm,rsp/npm,cchamberlain/npm-msys2,cchamberlain/npm-msys2,misterbyrne/npm,evanlucas/npm,Volune/npm,kemitchell/npm,cchamberlain/npm,Volune/npm,princeofdarkness76/npm,yibn2008/npm,yodeyer/npm,kriskowal/npm,kriskowal/npm,thomblake/npm,cchamberlain/npm,xalopp/npm,chadnickbok/npm,kimshinelove/naver-npm,yibn2008/npm,rsp/npm,segrey/npm,midniteio/npm,chadnickbok/npm,segment-boneyard/npm,DIREKTSPEED-LTD/npm,yodeyer/npm,DaveEmmerson/npm,chadnickbok/npm,midniteio/npm,kemitchell/npm,DaveEmmerson/npm,evocateur/npm,lxe/npm,yibn2008/npm,Volune/npm,misterbyrne/npm,segmentio/npm,ekmartin/npm,yyx990803/npm,thomblake/npm,princeofdarkness76/npm,princeofdarkness76/npm,cchamberlain/npm,kemitchell/npm,misterbyrne/npm,lxe/npm,ekmartin/npm,evanlucas/npm,segrey/npm,yyx990803/npm,evanlucas/npm,cchamberlain/npm-msys2,segrey/npm,segmentio/npm,xalopp/npm,kimshinelove/naver-npm,segment-boneyard/npm,xalopp/npm,segment-boneyard/npm,segmentio/npm,haggholm/npm,DIREKTSPEED-LTD/npm,evocateur/npm,kimshinelove/naver-npm,midniteio/npm,thomblake/npm,ekmartin/npm,DaveEmmerson/npm