Set up fail as `go get` is deprecated

[0xWoodpecker]

Following the set up instructions, I am running go get github.com/ava-labs/avash. This gives the following error. Sounds like the fix would be the publish this as a versioned package.

go get: installing executables with 'go get' in module mode is deprecated.
	Use 'go install pkg@version' instead.

Also tried the following but doesn't work.

go install ava-labs/avash@latest
go install: ava-labs/avash@latest: malformed module path "ava-labs/avash": missing dot in first path element

[sagefarrenholz]

The repo should be updated. That said, the binary should still install with this warning. Check if avash is installed in $GOPATH/bin

[michaelBenin]

go install github.com/ava-labs/avash@latest works