Added a README file regarding WinRT support

To note, this file is currently formatted with CRLF line endings, rather than
LF, to allow the file to be viewed with Notepad.

test/testfilesystem.c

@@ -0,0 +1,33 @@
+/*
+  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+/* Simple test of power subsystem. */
+
+#include <stdio.h>
+#include "SDL.h"
+
+int
+main(int argc, char *argv[])
+{
+    /* Enable standard application logging */
+    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
+
+    if (SDL_Init(0) == -1) {
+        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Init() failed: %s\n", SDL_GetError());
+        return 1;
+    }
+
+    SDL_Log("base path: '%s'\n", SDL_GetBasePath());
+    SDL_Log("pref path: '%s'\n", SDL_GetPrefPath("libsdl", "testfilesystem"));
+
+    SDL_Quit();
+    return 0;
+}