fix linting errors

lib/6to5/detection/index.js

@@ -1,9 +1,7 @@
 module.exports = detect;
 
-//var useragent = require("useragent");
-var traverse  = require("../traverse");
-
 var SYNTAX_KEYS = require("./syntax-keys");
+var traverse    = require("../traverse");
 var visitors    = traverse.explode(require("./visitors"));
 
 function detect(ast) {

lib/6to5/helpers/levenshtein.js

@@ -35,4 +35,4 @@ module.exports = function (a, b) {
   }
 
   return matrix[b.length][a.length];
-}
+};

lib/6to5/transformation/modules/common.js

@@ -3,9 +3,9 @@
 module.exports = CommonJSFormatter;
 
 var DefaultFormatter = require("./_default");
+var contains         = require("lodash/collection/contains");
 var util             = require("../../util");
 var t                = require("../../types");
-var contains         = require("lodash/collection/contains");
 
 function CommonJSFormatter() {
   DefaultFormatter.apply(this, arguments);