Ran into issues trying to run dragonruby-publish to publish one of the sample dragonruby apps as a test. Any help would be appreciated. I can launch the sample app with dragonruby just fine.
```
$ ./dragonruby-publish mygame
Starting publish for game in directory 'mygame'
Developer ID: myname
Developer Title: My Name
Game ID: mygame
Game Title: My Game
Game Version: 0.1
Game Icon: metadata/icon.png
All platform builds are complete!
Downloading itch.io butler...
Download of 'https://broth.itch.ovh/butler/darwin-amd64/LATEST/archive/default' failed
Failed to download itch.io butler
```
System Info:
OS X 10.14.6
Ruby 2.7 (RVM)
I've installed butler via the Itch app (https://itch.io/docs/butler/installing.html), and also dragonruby, but using the downloaded binary to try to publish.
```
$ butler -V
v15.17.3, built on Dec 13 2019 @ 08:55:52, ref 94c194ef1888b0363e399983355bf981dee38ff8
$ butler login
Your local credentials are valid!
```