Route options

[yonjah]

This pull request will allow to override settings for each route. I also added a few useful settings to override - enabled - to enable rate limiting only for specific routes addHeaders - to add rate liming headers to response count - to change the cost of a route

All new settings are optional and default to original behavior.

[dschenkelman]

@yonjah thanks for the PR. I'm a bit backed up at work but will try to make some time to review

[yonjah]

Ok hope it looks better now