Neat idea, perhaps a bit of time spent looking at how mobile browsers work with your site, I think adding an appropriate viewport tag would go a long way.
It was supposed to be responsive but I released it before I did that, https://github.com/thinkxl/rocketbin you can see is in my TODO list, but in the mean time I will add the proper viewport tag.
Sorry about that :)
was about to say "whats wrong with github gists?", but the emmet-style editing features are nice. if you could login with github and have them save as gists, then i'd 100% use this all the time.
Rocketbin author here, I was working in a custom User Management system... but your idea is a lot better, I will work on that to see how it goes.
My intention is learn how to do it, but I can try both, thanks for the idea :)