First pass formatting with Prettier

* Added .prettierrc.json
* Added .prettierignore
* Formatted

util/to_ansi.js

@@ -6,25 +6,25 @@
 
 const { controlCodesToAnsi } = require('../core/color_codes.js');
 
-const fs    = require('graceful-fs');
+const fs = require('graceful-fs');
 const iconv = require('iconv-lite');
 
 const ToolVersion = '1.0.0';
 
 function main() {
-    const argv = exports.argv = require('minimist')(process.argv.slice(2), {
-        alias : {
-            h		: 'help',
-            v		: 'version',
-        }
-    });
+    const argv = (exports.argv = require('minimist')(process.argv.slice(2), {
+        alias: {
+            h: 'help',
+            v: 'version',
+        },
+    }));
 
-    if(argv.version) {
+    if (argv.version) {
         console.info(ToolVersion);
         return 0;
     }
 
-    if(0 === argv._.length || argv.help) {
+    if (0 === argv._.length || argv.help) {
         console.info('usage: to_ansi.js [--version] [--help] PATH');
         return 0;
     }
@@ -32,7 +32,7 @@ function main() {
     const path = argv._[0];
 
     fs.readFile(path, (err, data) => {
-        if(err) {
+        if (err) {
             console.error(err.message);
             return -1;
         }