bump versions

LICENSE

@@ -1,6 +1,6 @@
 JNA is dual-licensed under 2 alternative Open Source/Free 
 licenses: LGPL 2.1 and Apache License 2.0. (starting with
-JNA version 3.6.0). 
+JNA version 4.0.0). 
 
 What this means is that one can choose either one of these
 licenses (for purposes of re-distributing JNA; usually by

README.md

@@ -108,7 +108,7 @@ License
 =======
 
 This library is licensed under the LGPL, version 2.1 or later, and (from
-version 3.6 onward) the Apache Software License, version 2.0.  Commercial
+version 4.0 onward) the Apache Software License, version 2.0.  Commercial
 license arrangements are negotiable.
 
 *NOTE: Oracle is not sponsoring this project, even though the package name (com.sun.jna) might imply otherwise.*

www/Contributing.md

@@ -8,7 +8,7 @@ JNA contains work from many developers. You're encouraged to contribute to both
 - Check out the code with `git clone git@github.com:username/jna.git`
 - Ensure you can build the project with `ant dist test`
 - Make your code changes, write tests, build
-- Submit pull requests, topical branches are encouraged.
+- Submit pull requests, forks and/or topical branches are encouraged.
 
 Build Environment
 =================
@@ -17,12 +17,25 @@ gcc, autotools (for libffi), ant (1.8+), a JDK (1.4+), and a few other typical
 command-line utilities available.  Feel free to report any issues, we'll
 generally pull build fixes immediately. 
 
+Native builds may be skipped by passing `-Dskip-native=true` to `ant`.  It's
+save to skip the native build as long as your modifications are restricted to
+Java code.
+
+For debian-style installs,
+
+    % apt-get install git ant openjdk-6-jdk make autotools gcc
+
+For most unix-like systems:
+
+    % git clone git@github.com:twall/jna
+    % ant dist test
+
 For Windows, see [Windows Development Environment](WindowsDevelopmentEnvironment.md).
 
 For windows CE/Mobile 6.x, you'll need cegcc (http://gitorious.org/cegcc) for
 cross-compiling and a JavaME implementation (phoneME (http://davy.preuveneers.be/phoneme) works well).
 
-Native builds may be skipped by passing `-Dskip-native=true` to `ant`.
+For Android, see [Android Development Environment)(AndroidDevelopmentEnvironment.md).
 
 Required Testing
 ================

www/WindowsDevelopmentEnvironment.md

@@ -1,8 +1,8 @@
 ## Setting up a Windows Development Environment
 
-Windows builds require cygwin.  MSYS may work, but is not supported.
+Windows builds require cygwin.  MSYS will probably work, but is not supported.
-When installing cygwin, include ssh, git, make, and either gcc3 or mingw64, 
+When installing cygwin, include ssh, git, make, autotools, and either gcc3 or
-depending on whether you're targeting win32 or win64, respectively (it's 
+mingw64, depending on whether you're targeting win32 or win64, respectively (it's 
 possible to build both from the same host).
  
 To build on Win64, you'll need mingw64 (available with cygwin or separately),