First Linux Build

Am very happy to say that SailSim is also now available for Linux. The CrossPlay system is not activated in the first upload as i am trying to work it out but the rest of the simulator should be fully functional. 

I remember when i was working on Linux, i couldn't find any games to play and Doom was beginning to annoy me after the 1000000th time :) So hopefully this will keep you occupied for a bit and hopefully make you get out to sea :)

If there is an issue with the build please let me know.