How to run in 2023 with modern Go versions

[JaimeObregon]

I was considering submitting a pull request to update the README.md, but it appears that the project has been abandoned, as recent pull requests don't seem to be getting merged.

I have no prior experience with Go, and as of November 2023, the instructions outlined in the README.md are unsuccessful on my MacBook Pro with an M2 chip. I encountered the following errors:

$ go run src/scummatlas/main/scummatlas.go -gamedir=/tmp/<GAME_FOLDER> -outputdir out
src/scummatlas/main/scummatlas.go:4:2: package fileutils is not in std (/opt/homebrew/Cellar/go/1.21.4/libexec/src/fileutils)
src/scummatlas/main/scummatlas.go:11:2: package scummatlas is not in std (/opt/homebrew/Cellar/go/1.21.4/libexec/src/scummatlas)
src/scummatlas/main/scummatlas.go:12:2: package scummatlas/condlog is not in std (/opt/homebrew/Cellar/go/1.21.4/libexec/src/scummatlas/condlog)
src/scummatlas/main/scummatlas.go:13:2: package scummatlas/templates is not in std (/opt/homebrew/Cellar/go/1.21.4/libexec/src/scummatlas/templates)

I am using Go 1.21:

$ go version
go version go1.21.4 darwin/arm64

I have been able to fix it by just running this first:

$ go env -w GO111MODULE=off

After that, scummatlas successfully ran with "The Secret of Monkey Island" downloaded from here and "Monkey Island 2: LeChuck's Revenge" from here.