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.

Xcode-iOS/Demos/src/common.h

@@ -0,0 +1,12 @@
+/*
+ *  common.h
+ *  written by Holmes Futrell
+ *  use however you want
+ */
+
+#define SCREEN_WIDTH 320
+#define SCREEN_HEIGHT 480
+
+extern int randomInt(int min, int max);
+extern float randomFloat(float min, float max);
+extern void fatalError(const char *string);