Add search to nodes

examples/parse.js

@@ -3,7 +3,6 @@ var PSD = require('../');
 psd = PSD.open('./examples/images/example.psd', function (psd) {
   console.log(psd.header.export());
   console.log(psd.tree().export());
-  console.log(psd.layerMask.globalMask);
 });
 // psd.image.saveAsPng('./output.png').then(function () {
 //   console.log("Finished!");

lib/psd/node.coffee

@@ -3,6 +3,7 @@ _        = require 'lodash'
 
 module.exports = class Node extends Module
   @includes require('./nodes/ancestry.coffee')
+  @includes require('./nodes/search.coffee')
 
   @PROPERTIES: ['name', 'left', 'right', 'top', 'bottom', 'height', 'width']