Added a Grease Monkey script

Today I ran across the Grease Monkey add-on for Firefox --- wow, is it cool. Doing some research, I found some example scripts which put some ideas in my head about how to use it on Gi. For starters, tonight, using some example scripts, I modified them and created a basic Gi script that would show the player's stock ticker symbol and the current stock price. So if a user is reading an article with Phil Mickelson's name in it, the Gi Grease Monkey script will show the "G" icon for Gi, Mickelson's Gi ticker symbol (i.e. PHMIN) and his current stock price on the 2007 Season Market.

You have to use the Firefox browser to be able to use the Gi Grease Monkey script. If you are not already using Firefox as a browser, it is recommended you do. Get it here: http://getfirefox.com

Then download and install the Grease Monkey add-on for Firefox. http://greasemonkey.mozdev.org/

Then download and install the Gi Grease Monkey script. http://golfinvestors.com/external/gi_stocks_greasemonkey.user.js