v0.3.70001: Publish macOS binaries (#11)

Publish macOS binaries

v0.3.60007: Add support for disk_usage to goss (#8)

MVP PR that adds support for disk_usage (total bytes, free bytes and percent available).

Testing strategy:
- ci on linux and windows passes
- goss add disk-usage "invalid dir", goss add disk-usage / and goss validate work as expected

v0.3.60005

mod

v0.3.60004

skc

v0.3.60003

test script

v0.3.60002: Make goss compile on windows. (#2)

I've extracted the unix-only part to file_unix.go and windows part to file_windows.go. I haven't found an easy way to support owners/groups on windows, so I've left it empty.

TODO: figure out how to write and run integration tests on windows, but probably not this pr.

v0.3.60001

travis yml