README file excludes important step

[ttesty]

I followed the README file instructions exactly... It's missing a step to install the Vulkan SDK (if it's not already installed)!
Please update instructions...

Building package vulkan[core]:x64-windows...

-- Querying VULKAN_SDK Enviroment variable

CMake Error at ports/vulkan/portfile.cmake:12 (message):

Could not find Vulkan SDK.  Before continuing, please download and install
Vulkan from:

    https://vulkan.lunarg.com/sdk/home

If you have already downloaded it, make sure the VULKAN_SDK environment
variable is set to vulkan's installation root.

Call Stack (most recent call first):

scripts/ports.cmake:76 (include)

Error: Building package vulkan:x64-windows failed with: BUILD_FAILED