Briefly describe AppVeyor usage for Windows wheels

README.rst

-######################################################
-Utilities for building on travis-ci with OSX and Linux
-######################################################
+################################################
+Utilities for building on Travis-CI and AppVeyor
+################################################
 
-A set of scripts to automate builds of OSX and manylinux1 wheels on travis-ci
-infrastructure.
+A set of scripts to automate builds of OSX and manylinux1 wheels on the
+`Travis-CI <http://travis-ci.org/>`_ infrastructure, and also Windows
+wheels on the `AppVeyor <https://ci.appveyor.com/>`_ infrastructure.
 
-These scripts are designed to build *and test*:
+The TravisCI scripts are designed to build *and test*:
 
 * Dual architecture OSX wheels;
-* 64-bit manylinux1_x86_64 wheels, both narrow and wide unicode builds;
-* 32-bit manylinux1_i686 wheels, both narrow and wide unicode builds.
+* 64-bit ``manylinux1_x86_64`` wheels, both narrow and wide unicode builds;
+* 32-bit ``manylinux1_i686`` wheels, both narrow and wide unicode builds.
 
 You can currently build and test against Pythons 2.6, 2.7, 3.3, 3.4, 3.5, 3.6.
 
@@ -17,6 +18,13 @@ The small innovation here is that you can test against 32-bit builds, and both
 wide and narrow unicode Python 2 builds, which was not easy on the default
 travis-ci configurations.
 
+The AppVeyor setup is designed to build *and test*:
+
+* 64-bit Windows ``win_amd64`` wheels;
+* 32-bit Windows ``win32`` wheels.
+
+You can currently build and test against Pythons 2.7, 3.4, 3.5, 3.6.
+
 *****************
 How does it work?
 *****************
@@ -319,6 +327,19 @@ To use these scripts
 * Make sure your project is set up to build on travis-ci, and you should now
   be ready (to begin the long slow debugging process, probably).
   
+* For the Windows wheels, create an ``appveyor.yml`` file, something like:
+
+  - https://github.com/MacPython/numpy-wheels/blob/master/appveyor.yml
+  - https://github.com/MacPython/astropy-wheels/blob/master/appveyor.yml
+  - https://github.com/MacPython/nipy-wheels/blob/master/appveyor.yml
+  - https://github.com/MacPython/pytables-wheels/blob/master/appveyor.yml
+  
+  Note the Windows test customisations etc are inside ``appveyor.yml``,
+  and that ``config.sh`` is only for the Linux/Mac builds on TravisCI.
+
+* Make sure your project is set up to build on appveyor, and you should now
+  be ready (for what could be another round of slow debugging).
+
 If your project depends on numpy, you will want to build against the earliest
 numpy that your project supports - see `forward, backward numpy compatibility
 <http://stackoverflow.com/questions/17709641/valueerror-numpy-dtype-has-the-wrong-size-try-recompiling/18369312#18369312>`_.