fixed bug reading non-existant config files

bin/goldilocks.js

@@ -43,7 +43,7 @@ function createStorage(filename, filetype) {
   function read() {
     return fs.readFileAsync(filename).then(parse).catch(function (err) {
       if (err.code === 'ENOENT') {
-        return '';
+        return {};
       }
       return PromiseA.reject(err);
     });