requires_io is a web service that scan your code every time you push on GitHub, detect all your dependencies and check wether they are still up to date.

This option add the relevant files to let your package use requires_io. This option install local configuration files but you still need to register your project by hand. Have a look at the Documentation or Register on tutorial for more information:

(dvlpt)$ pmg add requires
(dvlpt)$ pmg rg

$ git add --all
$ git commit -m"added requires support"
$ git push