Roadmap update (previously named Master)

Closes #906 (closed)

This is the first time I've done anything like this and I only modified the lang/template/roadmap.yml and the /lang/en/roadmap.yml. So I don't know if I did something dumb or if the readme is out of date, because roadmap.yml is not in the base of the _data/ folder like it said it would be.

So yeah.. Is there some sort of bot that gets flagged to update the other languages too, or did I mess up? Thanks!