msvc: update documentation for VS2010

COMPILE.TXT

@@ -1,4 +1,8 @@
-How To Compile, install & run Capstone for Linux, Mac OSX, *BSD and Windows
+This documentation explains how to compile, install & run Capstone on MacOSX,
+Linux, *BSD & Solaris. We also show steps to cross-compile for Microsoft Windows.
+
+To natively compile for Windows using Microsoft Visual Studio, see COMPILE_MSVC.TXT.
+
                         *-*-*-*-*-*
 
 Capstone requires no prerequisite packages, so it is easy to compile & install.

COMPILE_MSVC.TXT

@@ -1,8 +1,12 @@
-How To Compile & run Capstone for Windows
+How To compile Capstone on Windows using Microsoft Visual Studio.
+
                         *-*-*-*-*-*
 
 Capstone requires no prerequisite packages, so it is easy to compile & install.
-Open the Visual Studio solution msvc/capstone.sln and see the instructions below.
+Open the Visual Studio solution "msvc/capstone.sln" and follow the instructions
+below.
+
+NOTE: This requires Visual Studio 2010 or newer versions.
 
 
 (0) Tailor Capstone to your need.

msvc/README

@@ -0,0 +1,16 @@
+This directory includes all the necessary files to compile Capstone on Windows
+using Microsoft Visual Studio (VS).
+
+
+NOTE:
+
+(1) Visual Studio 2010 or newer versions is required. Open "capstone.sln" to
+    build the libraries & test code with Visual Studio. The resulted binaries
+	are put under either msvc/Debug or msvc/Release, depending on how you choose
+	to compile them.
+
+(2) The solution (capstone.sln) & all project files (*.vcxproj) are made in
+    Visual Studio 2010, so if you open them using newer version, an extra step
+	is needed to convert them to current version. Just accept this when
+	asked at the initial dialog, and proceed to build the solution normally
+	afterwards.