add node modules to repo

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

@@ -0,0 +1,24 @@
+var fs = require('graceful-fs')
+var path = require('path')
+var jsonFile = require('./jsonfile')
+var mkdir = require('../mkdirs')
+
+function outputJson (file, data, options, callback) {
+  if (typeof options === 'function') {
+    callback = options
+    options = {}
+  }
+
+  var dir = path.dirname(file)
+
+  fs.exists(dir, function (itDoes) {
+    if (itDoes) return jsonFile.writeJson(file, data, options, callback)
+
+    mkdir.mkdirs(dir, function (err) {
+      if (err) return callback(err)
+      jsonFile.writeJson(file, data, options, callback)
+    })
+  })
+}
+
+module.exports = outputJson