add node modules to repo

app/node_modules/fs-extra/lib/json/output-json-sync.js

@@ -0,0 +1,16 @@
+var fs = require('graceful-fs')
+var path = require('path')
+var jsonFile = require('./jsonfile')
+var mkdir = require('../mkdirs')
+
+function outputJsonSync (file, data, options) {
+  var dir = path.dirname(file)
+
+  if (!fs.existsSync(dir)) {
+    mkdir.mkdirsSync(dir)
+  }
+
+  jsonFile.writeJsonSync(file, data, options)
+}
+
+module.exports = outputJsonSync