Add simplecov-json to available formatters
Add simplecov-json to available formatters

QuickPay/simplecov,gerry3/simplecov,mallikarjunayaddala/simplecov,playpasshq/simplecov,irfanah/simplecov,colszowka/simplecov,colszowka/simplecov,hugopeixoto/simplecov,ptashman/simplecov