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/jsonfile.js

@@ -0,0 +1,12 @@
+'use strict'
+
+const u = require('universalify').fromCallback
+const jsonFile = require('jsonfile')
+
+module.exports = {
+  // jsonfile exports
+  readJson: u(jsonFile.readFile),
+  readJsonSync: jsonFile.readFileSync,
+  writeJson: u(jsonFile.writeFile),
+  writeJsonSync: jsonFile.writeFileSync
+}