We don't need the VULKAN_SDK to build SDL with Vulkan support anymore

docs/README-ios.md

@@ -7,11 +7,9 @@ Building the Simple DirectMedia Layer for iOS 5.1+
 
 Requirements: Mac OS X 10.8 or later and the iOS 7+ SDK.
 
-Instructions:
-
-1.  Either download [Molten](https://moltengl.com/free-trial/) and unzip it or download the Vulkan headers from Khronos's [Vulkan-Docs](https://github.com/KhronosGroup/Vulkan-Docs/tree/1.0/src/vulkan) repo and put them in a directory hierarchy `include/vulkan`.
-2.  Open SDL.xcodeproj (located in Xcode-iOS/SDL) in Xcode.
-3.  Set a `VULKAN_SDK` custom path in the Xcode preferences. Select *Custom Paths* on the *Locations* tab. The value should be either the `MoltenVK` directory within the unzipped Molten package or the parent of the `include/vulkan` hierarchy.
+Instructions:
+
+2.  Open SDL.xcodeproj (located in Xcode-iOS/SDL) in Xcode.
 4.  Select your desired target, and hit build.
 
 There are three build targets:
@@ -27,10 +25,9 @@ There are three build targets:
 Build SDL for iOS from the command line
 ==============================================================================
 
-1. Follow step 1 above.
-2. Either create and export a `VULKAN_SDK` environment variable with the value described in step 3 above or open Xcode, set the custom path described in step 3 above and close Xcode.
-3. cd (PATH WHERE THE SDL CODE IS)/build-scripts
-2. ./iosbuild.sh
+1. Follow step 1 above.
+2. cd (PATH WHERE THE SDL CODE IS)/build-scripts
+3. ./iosbuild.sh
 
 If everything goes fine, you should see a build/ios directory, inside there's
 two directories "lib" and "include". 

docs/README-macosx.md

@@ -6,18 +6,9 @@ These instructions are for people using Apple's Mac OS X (pronounced
 
 From the developer's point of view, OS X is a sort of hybrid Mac and
 Unix system, and you have the option of using either traditional
-command line tools or Apple's IDE Xcode.
-
-Preparation
-===========
-
-1.  Either download [Molten](https://moltengl.com/free-trial/) and unzip it or download the Vulkan headers from Khronos's [Vulkan-Docs](https://github.com/KhronosGroup/Vulkan-Docs/tree/1.0/src/vulkan) repo and put them in a directory hierarchy `include/vulkan`.
-2. Set a `VULKAN_SDK` variable in one of the ways described below. Its value should be either the `MoltenVK` directory within the unzipped Molten package or the parent of the `include/vulkan` hierarchy.
-	- If you are going to use the command line, set and export a `VULKAN_SDK` environment variable in your shell's start-up file, e.g. `~/.bash_profile`.
-	- If you are going to use CMake, either set and export a `VULKAN_SDK` environment variable before running `cmake` or set the `VULKAN_SDK` variable in `cmake-gui` and press *Configure*.
-	- If you are going to use the provided Xcode projects, set a `VULKAN_SDK` custom path in Xcode's preferences. Select *Custom Paths* on the *Locations* tab of preferences.
-
-Command Line Build
+command line tools or Apple's IDE Xcode.
+
+Command Line Build
 ==================
 
 To build SDL using the command line, use the standard configure and make