Update turbo.lua

Add rockspec for 2.1.2 and bump version.

Bump version to 2.1.1.

Added rockspec for v2.1.0.

Release 2.0.4 version bump and rockspec added. Also fix issue #237 ad…

…d OSX to rockspec platforms.

Staging for version 2.0.3.

Version 2.0.2 release rockspec and version bumps.

Add rockspec for v2.0.1

Fix for Github Issue #211.

Fix for Github Issue #211.