Add code format tool (not finished yet)

package.json

@@ -39,6 +39,7 @@
     "lodash": "^3.3.1",
     "mocha": "^2.0.1",
     "should": "^7.0.1",
-    "tiny-worker": "^1.1.1"
+    "tiny-worker": "^1.1.1",
+    "js-beautify": "^1.5.10"
   }
 }

tools/codeformat.js

@@ -0,0 +1,47 @@
+'use strict';
+
+var _         = require('lodash');
+var bluebird  = require('bluebird');
+var path      = require('path');
+var glob      = bluebird.promisify(require('glob'));
+var fs        = require('fs');
+var readFile  = bluebird.promisify(fs.readFile);
+var writeFile = bluebird.promisify(fs.writeFile);
+var beautify  = require('js-beautify').js_beautify;
+
+var beautify_options = {
+  "indent_size": 2,
+  "indent_char": " ",
+  "eol": "\n",
+  "indent_level": 0,
+  "indent_with_tabs": false,
+  "preserve_newlines": true,
+  "max_preserve_newlines": 10,
+  "jslint_happy": false,
+  "space_after_anon_function": false,
+  "brace_style": "collapse",
+  "keep_array_indentation": false,
+  "keep_function_indentation": false,
+  "space_before_conditional": true,
+  "break_chained_methods": false,
+  "eval_code": false,
+  "end_with_newline": true
+};
+
+console.log("Starting formatting.");
+
+var sources = path.join('src', 'languages', '*.js');
+
+bluebird.map(glob(sources), function (name) {
+  var basename = path.basename(name, '.js');
+
+  return readFile(name).then(function (blob) {
+    return beautify(blob.toString(), beautify_options);
+  }).then(function (blob) {
+    return writeFile(name, blob).then(function () {
+      console.log(" ✓ " + basename);
+    });
+  });
+}).then(function () {
+  console.log("Finished formatting.");
+});