Following this thread, I converted my GPIO integration, and received the following error:
Invalid config for [binary_sensor.rpi_gpio]: [sensors] is an invalid option for [binary_sensor.rpi_gpio]. Check: binary_sensor.rpi_gpio->sensors. (See ?, line ?).
I found that installing the Custom Component and restarting, then editing my Config file per the instructions, and restarting got the integration working.