I don't know what state you are in, but that is very low for RoR/JS dev. There are remote-only positions that would pay double that easily. That would mean 0 minute and you can stay where you are.
You could also easily top that on an online freelancing site like Upwork. I have friends that are Upwork-exclusive and make upwards of $200k per year. It takes a while to get that going, but it's a great option if you can swing it.