Ability to validate rules?

[DylanPiercey]

Is there a way to run a .eslintrc/config through a validator that would tell me if there are typo's in any of my rules?

Or at-least export the selected rules from the demo.

[gyandeeps]

I like the idea.
To add to it, it can also tell which rules are deprecated.

[DylanPiercey]

It would also be nice if it could tell if the options are valid.

IE:

{"yoda": true}
// should be
{"yoda": [2, "always"]}

[nzakas]

Duplicate of #967.