Vulkan Tutorial Code uploaded to Github

[Doug Clayton]

Hi All,

I just uploaded a working example of Vulkan working in D (With a 
Hello World triangle) on Github for anyone interested: 
https://github.com/DougClayton4231/VulkanTutorialD

I couldn't find a working binding for Vulkan, so I hope this will 
help people get up and running and building their own 
applications.

I only set up the Vulkan and GLFW3 bindings for Windows, so 
anyone on other OSes will need to extend those bindings with the 
appropriate functions and variables for those platforms.

Big thanks to evilrat for helping me get those string arrays 
pointed to char**.