Installing on Windows 10 & SBCL using Cmder installed with Chocolatey & x64

This is what I had to do in order to get through several errors for missing SDL DLL's and FFI.H header.

1. Install Cmder using Chocolatey: https://chocolatey.org/packages/Cmder
2. Download and copy all the SDL, SDL_image and SDL_ttf DLL's to SBCL's .exe folder:
	a. https://www.libsdl.org/download-2.0.php
	b. https://www.libsdl.org/projects/SDL_image/
	c. https://www.libsdl.org/projects/SDL_ttf/
3. ![example of dlls in folder](http://s01.geekpic.net/di-AV7H5E.png)

4. Download and copy the precompiled libffi folders include and .libs to the mingw64:
	a. Download the precompiled from here:
		i. https://proj.goldencode.com/projects/p2j/wiki/Building_and_Installing_libffi_on_Windows
	b. Copy the include and .libs folder here:
		i. ![example and path of ffi folders into mingw64](http://s01.geekpic.net/di-DW8TCE.png)