Tidy environment

Hello,

Just cleaning things up a bit.

* Configured .gitignore to drop config and auto-generated files (IDE stuff) that I know are safe.
* Renamed KLFServer to KMPServer
* Provided a tiny script that builds both KerbalMultiPlayer.dll and KMPServer.exe in a Mono/MCS environment (For the Linux folks).
* Updated README with a fix for the viewer crashing 64-bit Linux users.

- velusip