Update README.md

This is the description of this open-source demo application.
You can freely use and modify this code for your app without any notification to creator.

When you want to use google images, usually select the image by using UIWebView. As we knew this approach has it's limitation because of frequent changing HTML tags and inner javascript implementation in apps.

Here is the one solution.
This application extract images' path from HTML code of searched Google images, and load images directly from urls and show the images in small thumbnail scroll view.
You can easily modify your screen UI and implement your own functionalities without limitations.

The call back image loading and pre-creation of view are applied for performance. 

Please freely use this application without any limitations and let me know if you have any good ideas to improve this demo app.