Not all Linux systems need to use bash to run the bots

I'm coding my bot on Mono in Linux Ubuntu 14.04 LTS (Trusty Tahr).

I installed Mono & MonoDevelop using this command (sudo apt-get install monodevelop)
This installed everything I needed to build and run the sample bot and test harness, but I found that the harness could not run the default bots due to an error that I tracked down to line 38 in Player.cs where bash is always assumed for any Unix system this case most definitely does not hold true on my system thus the config tweak and this pull request.

I Introduced 2 new settings to disable the player model from trying to launch the bot process with bash on the Unix platform.

Using this fixed the issue for me.