Remove CoffeeScript dependency

main.js

@@ -8,8 +8,6 @@
   TODO: params parsing and so on
 #*/
 'use strict';
-require('coffee-script/register');
-
 const Mapscii = require('./src/Mapscii');
 
 const mapscii = new Mapscii();

package.json

@@ -32,7 +32,6 @@
     "@mapbox/vector-tile": "^1.3.0",
     "bluebird": "^3.5.1",
     "bresenham": "0.0.4",
-    "coffee-script": "^1.12.7",
     "earcut": "^2.1.2",
     "keypress": "^0.2.1",
     "node-fetch": "^1.7.3",