Updated Steamworks.NET to 1.1.0
Fixed compiling due to Steamworks.NET 1.1.0
Cleanup from lessons learned while developing 'Steamworks.NET Test'
Windows -> Unix line endings
Updated Steamworks.NETUpdated Steamworks.NET to 2.0.0

No longer using git modules, as Steamworks.NET's directory structure has
changed a fair amount to accommodate editor scripts as well as the
standalone version.