chg: be more precise in error message on config file.
chg: be more precise in error message on config file.

audreyr/cookiecutter,audreyr/cookiecutter,terryjbates/cookiecutter,cguardia/cookiecutter,stevepiercy/cookiecutter,dajose/cookiecutter,dajose/cookiecutter,Springerle/cookiecutter,Springerle/cookiecutter,pjbull/cookiecutter,cguardia/cookiecutter,willingc/cookiecutter,pjbull/cookiecutter,hackebrot/cookiecutter,luzfcb/cookiecutter,willingc/cookiecutter,michaeljoseph/cookiecutter,hackebrot/cookiecutter,ramiroluz/cookiecutter,ramiroluz/cookiecutter,luzfcb/cookiecutter,stevepiercy/cookiecutter,michaeljoseph/cookiecutter,terryjbates/cookiecutter