BP Activity Plus Installation Clarification

In the Buddypress Activity Plus plugin 'readme.txt' file re: Installation, states "3. Upload the /bpfb/ folder to the /wp-content/plugins/ folder on your site"

There's only a bpfb.php file -- there's no bpfb folder. Do I upload only the bpfb.php file to wp-content/plugins, or do I upload the buddypress-activity-plus folder to wp-content/plugins?