Mac Compilation : Add opengl lib/header paths and c++11 flags.

[ashishnegi]

About the line-ending changes :
Every time i save the file in emacs/vim, it just auto removes the line-character.
Hope its ignorable.

[gpu]

Thanks for this (and apologies that I did not yet do this on my own, I've been on a conference and could not yet have a closer look at this).

I think that it will also be necessary to set

cmake_minimum_required(VERSION 3.1.0)

because that's the version where the CXX_STANDARD property was introduced. If you added this, I'd pull it accordingly, otherwise I'll pull your current version and add the version afterwards. (BTW: I just tested it on Windows, and it works properly, also the other changes for OpenGL)

[ashishnegi]

Thanks for your work on JOCL. Community should come forward to make these simple changes. :)
I did set up the 3.1.0 minimum requirement.