[Vm-dev] [OpenSmalltalk/opensmalltalk-vm] f20ec8: Appveyor: add explicit dependency on make & wget

[GitHub]

  Branch: refs/heads/Cog
  Home:   https://github.com/OpenSmalltalk/opensmalltalk-vm
  Commit: f20ec8a683871b98744f9759955ea9277624648f
      https://github.com/OpenSmalltalk/opensmalltalk-vm/commit/f20ec8a683871b98744f9759955ea9277624648f
  Author: Nicolas Cellier <nicolas.cellier.aka.nice at gmail.com>
  Date:   2017-07-26 (Wed, 26 Jul 2017)

  Changed paths:
    M .appveyor.yml

  Log Message:
  -----------
  Appveyor: add explicit dependency on make & wget

make & wget are preinstalled in appveyor,
but those instructions might help having repeatable configuration for casual developpers