It works but it looks like I'll have to drag into terminal every time.
EDIT: I have a found a solution that works. It looks like newer versions of macOS (I'm assuming Sierra on up) only allow users to add Terminal executables to the /usr/local/bin without any problems or having to use sudo (which I attempted to open the /usr/bin folder with no luck). So if it's possible, there needs to be a disclaimer for macOS users to install butler for newer versions of the OS.