Release Archives for Windows don't contain license information

[ncook-hxgn]

I'd like to use the contents of your archive to produce a nuget package, but I'd like to make sure that my package redistributes your license.

Whilst I can download the license directly with a specific URL from GitHub, it would be reassuring to us to know that we always were getting the correct license for a particular version of OpenCL.

Could you please include licensing information/files in your release archives?