add prebuild-ci

[juliangruber]

This will make it so on every publish commit CI will upload the prebuilds to GitHub releases, so there's going to be automatic prebuilds for all OS / Node combinations we support, without manual work necessary.

[vweevers]

@juliangruber For this to work, we need to remove shallow_clone: true from appveyor.yml.

[juliangruber]

@juliangruber For this to work, we need to remove shallow_clone: true from appveyor.yml.

just read up on that, not sure why that would be a problem?

[vweevers]

The working directory will not be a git working tree if shallow_clone is true (Appveyor downloads a tarball from GitHub).

[juliangruber]

ok, I understand. I guess it's worth it though, trading build times for automatic prebuilds, right?

[juliangruber]

@vweevers bump

[vweevers]

LGTM.

[juliangruber]

@vweevers can you set PREBUILD_TOKEN as an env var on appveyor for this? Travis has it already

[vweevers]

@juliangruber done