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.

visualtest/include/SDL_visualtest_parsehelper.h

@@ -0,0 +1,44 @@
+/* See COPYING.txt for the full license governing this code. */
+/**
+ * \file SDL_visualtest_parsehelper.h
+ *
+ * Header with some helper functions for parsing strings.
+ */
+
+#ifndef _SDL_visualtest_parsehelper_h
+#define _SDL_visualtest_parsehelper_h
+
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Takes an string of command line arguments and breaks them up into an array
+ * based on whitespace.
+ *
+ * \param args The string of arguments.
+ *
+ * \return NULL on failure, an array of strings on success. The last element
+ *         of the array is NULL. The first element of the array is NULL and should
+ *         be set to the path of the executable by the caller.
+ */
+char** SDLVisualTest_ParseArgsToArgv(char* args);
+
+/**
+ * Takes a string and breaks it into tokens by splitting on whitespace.
+ *
+ * \param str The string to be split.
+ * \param max_token_len Length of each element in the array to be returned.
+ *
+ * \return NULL on failure; an array of strings with the tokens on success. The
+ *         last element of the array is NULL.
+ */
+char** SDLVisualTest_Tokenize(char* str, int max_token_len);
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SDL_visualtest_parsehelper_h */