Added frame icon, and  Changed icon file to jpg.
This is because ICOs aren't always supported by Java.
Made icons transparent, improved frame icons by using JFrame.setIconImages and updated FetchResource
The icons were changed to PNGs to support transparency, and FetchResource was updated to provide a list for JFrame.setIconImages.
Merge pull request #2 from rebl10/addFrameIcon

Added frame icon, changed icon file to png, and used JFrame.setIconImages()