There were no plans for that as ct.js is based on nw.js that doesn't officially support ARM platfroms. I release all the binaries provided by nw.js team.
Still, it seems that there is a way to run nw.js on ARM platforms: https://github.com/LeonardLaszlo/nw.js-armv7-binaries (actual binaries are in the "Releases" tab) Using it might be as simple as replacing binaries in ct.js for linux with binaries for ARM. Try it, and tell about results soon. Maybe it will work without problems and can be included on par with other ct.js releases. Maybe it is not suitable at all as I know nothing about Raspberry and its support for processors ¯\_(ツ)_/¯