FEAT: Add json read and write utility based on circular-json

utils.js

@@ -0,0 +1,29 @@
+var fs = require( 'graceful-fs' );
+var write = require( 'write' );
+var circularJson = require( 'circular-json' )
+
+module.exports = {
+
+  /**
+   * Read json file synchronously using circular-json
+   *
+   * @method readJSON
+   * @param  {String} filePath Json filepath
+   * @returns {*} parse result
+   */
+  readJSON: function ( filePath ) {
+    return circularJson.parse( fs.readFileSync( filePath ).toString().replace(/^\ufeff/g, '') );
+  },
+
+  /**
+   * Write json file synchronously using circular-json
+   *
+   * @method writeJSON
+   * @param  {String} filePath Json filepath
+   * @param  {*} data Object to serialize
+   */
+  writeJSON: function (filePath, data ) {
+    write.sync( filePath, circularJson.stringify( data ) );
+  }
+
+};