Import README-Windows.txt file: thanks to you Glenn, libnfc now have Windows build instructions.

README

@@ -18,6 +18,8 @@ The official forum site is:
 The official development site is:
   http://libnfc.googlecode.com/
 
+Important note: this file covers POSIX systems, for Windows please read README-Windows.txt
+
 Installation
 ============
 

README-Windows.txt

@@ -0,0 +1,57 @@
+*-
+* Public platform independent Near Field Communication (NFC) library
+* Copyright (C) 2010, Glenn Ergeerts
+-*
+
+Requirements
+============
+
+- MinGW-w64 compiler toolchain [1]
+- LibUsb-Win32 0.1.12.2 [2]
+- CMake 2.6 [3]
+
+This was tested on Windows 7 64 bit, but should work on Windows Vista and
+Windows XP and 32 bit as well. 
+Only the ACS ACR122 reader is tested at the moment, so any feedback about other devices is very welcome.
+
+Community forum: http://www.libnfc.org/community/
+
+Building
+========
+
+To build the distribution the MinGW Makefiles generator of CMake was used. Here
+is an example of how to generate a distribution with the above mentioned
+requirements fulfilled (it is assumed the CMake binaries are in the system
+path, this is optional during installation of CMake):
+
+- Add the following directories to your PATH : c:\MinGW64\bin;c:\MinGW64\x86_64-w64-mingw32\lib32;c:\MinGW64\x86_64-w64-mingw32\include
+
+- Now it is possible to run CMake and mingw32-make:
+
+  C:\dev\libnfc-read-only> mkdir ..\libnfc-build
+  C:\dev\libnfc-read-only> cd ..\libnfc-build
+  C:\dev\libnfc-build> cmake-gui .
+  
+Now you can configure the build. Press "Configure", specify "MinGW32 Makefiles"
+and then you have the opportunity to set some configuration variables. If you
+don't want a Debug build change the variable CMAKE_BUILD_TYPE to "Release".
+
+If a non-GUI solution is preferred one can use:
+
+  C:\dev\libnfc-build> cmake -G "MinGW Makefiles"
+                                     -DCMAKE_BUILD_TYPE=Release ..\libnfc-read-only
+
+Now run mingw32-make to build:
+
+  C:\dev\libnfc-read-only\bin> mingw32-make
+  
+The build will create a shared library for Windows (nfc.dll) to link your applications against. It will compile
+the tools against this shared library. 
+
+References
+==========
+[1] the easiest way is to use the TDM-GCC installer. 
+        Make sure to select MinGW-w64 in the installer, the regular MinGW does not contain headers for PCSC.
+        http://sourceforge.net/projects/tdm-gcc/files/TDM-GCC%20Installer/tdm64-gcc-4.5.1.exe/download
+[2] http://libusb-win32.sourceforge.net/
+[3] http://www.cmake.org