Add the github-linguist package

This commit only adds a single package and all of its transitive
dependencies. The github-linguist package will be used for counting
lines of code as a baseline for databases we are analyzing.

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

@@ -0,0 +1,27 @@
+'use strict'
+
+const path = require('path')
+const mkdir = require('../mkdirs')
+const pathExists = require('../path-exists').pathExists
+const jsonFile = require('./jsonfile')
+
+function outputJson (file, data, options, callback) {
+  if (typeof options === 'function') {
+    callback = options
+    options = {}
+  }
+
+  const dir = path.dirname(file)
+
+  pathExists(dir, (err, itDoes) => {
+    if (err) return callback(err)
+    if (itDoes) return jsonFile.writeJson(file, data, options, callback)
+
+    mkdir.mkdirs(dir, err => {
+      if (err) return callback(err)
+      jsonFile.writeJson(file, data, options, callback)
+    })
+  })
+}
+
+module.exports = outputJson