Accept full URL of a repository about eget

[dufferzafar]

I looked at the code and this would just need to handle GitHub URLs specially on Line 61:

eget/eget.go

Lines 60 to 89 in 55e9dac

	func getFinder(project string, opts *Flags) (finder Finder, tool string) {
	if IsLocalFile(project) || IsUrl(project) {
	finder = &DirectAssetFinder{
	URL: project,
	}
	opts.System = "all"
	} else {
	repo := project
	if strings.Count(repo, "/") != 1 {
	fatal("invalid argument (must be of the form `user/repo`)")
	}
	parts := strings.Split(repo, "/")
	if parts[0] == "" || parts[1] == "" {
	fatal("invalid argument (must be of the form `user/repo`)")
	}
	tool = parts[1]
	tag := "latest"
	if opts.Tag != "" {
	tag = fmt.Sprintf("tags/%s", opts.Tag)
	}
	finder = &GithubAssetFinder{
	Repo: repo,
	Tag: tag,
	Prerelease: opts.Prerelease,
	}
	}
	return finder, tool
	}