Increased reliability for third party servers

Life's been a bit busy, so I haven't had too much time to work on SWGAide. Here is a small update to better handle some of the newer third party servers.

Previously, SWGAide relied on the presence of SwgClient_r.exe or SWGEmu.exe to detect the Star Wars Galaxies folder. This approach turned out to not work for all third party servers as some use other file names. The detection has been changed to look for bottom.tre, a data file containing important assets for the game.

• SWG folder detection is now more reliable for third party servers
• Updated README file to reflect the availability of the .exe version
• Removed quite a bit of old, unused code.