Adding build header

config/getPackageJson.js

@@ -0,0 +1,25 @@
+const fs = require('fs');
+const path = require('path');
+
+/**
+ * A module to get package informations from package.json
+ * @module getPackageJson
+ * @param {...string} keys from package.json if no arguments passed it returns package.json content as object
+ * @returns {object} with given keys or content of package.json as object
+ */
+
+/**
+ * Returns package info
+ */
+const getPackageJson = function(...args) {
+  const packageJSON = JSON.parse(fs.readFileSync(path.join(__dirname, '../package.json')));
+  if (!args.length) {
+    return packageJSON;
+  }
+  return args.reduce((out, key) => {
+    out[key] = packageJSON[key];
+    return out;
+  }, {});
+};
+
+module.exports = getPackageJson;