Thanks everybody for your feedback !
I have been looking at artoo-spark gem for ruby. It is very old, I saw they did not change the uri to particle.io but even with this modification it still does not work.
CylonJS worked perfectly.
Also as mentioned above (and to increase their visibility), those two repos are promising.
I had a quick look and Particlerb is just like particle CLI but for oriented objects with ruby. Ruby_spark works fine to control devices separately, it is very easy to use. I really think they are the way to go the moment I write this message if you want to use ruby and your particle devices.