semistandard fixes

Author: shama

index.js

@@ -33,7 +33,7 @@ module.exports = function (options, wp, done) {
   };
 
   options = clone(options) || {};
-  const config = options.config || options;
+  let config = options.config || options;
 
   const isInWatchMode = !!options.watch;
   delete options.watch;

test/test.js

@@ -161,7 +161,7 @@ test('no options', function (t) {
 
 test('config file path with webpack-stream options', function (t) {
   t.plan(1);
-  var stream = webpack({
+  const stream = webpack({
     quiet: true,
     config: path.join(base, 'webpack.config.js')
   });