It's not appropriate to put binaries in /; binaries installed external to the package manager should be installed in /usr/local/bin or /usr/local/libexec on most systems. Since it's not meant to be executed by users directly, it's probably more appropriate to be in libexec; also, since "keyfetch" is a rather generic name, it's probably better to rename it as "tangled-keyfetch". Signed-off-by: Runxi Yu <me@runxiyu.org>