feat: Treat *.coffee.md as literate
feat: Treat *.coffee.md as literate

Based on https://github.com/jonmumm/grunt-coffeelint/commit/83f88c2220eae24b3cc9ef5c2ada1ec4aa93d617#tasks-coffeelint-js-P5
eddiemonge/grunt-coffeelint,geta6/grunt-coffee-lint,vojtajina/grunt-coffeelint,atom/grunt-coffeelint