Add Windows CI build config for appveyor

appveyor.yml

@@ -0,0 +1,32 @@
+environment:
+
+  matrix:
+
+    # For Python versions available on Appveyor, see
+    # https://www.appveyor.com/docs/windows-images-software/#python
+
+    - PYTHON: "C:\\C:\Python26-x64"
+      TOX_ENV: "py26"
+
+    - PYTHON: "C:\\Python27-x64"
+      TOX_ENV: "py27"
+
+    - PYTHON: "C:\\Python33-x64"
+      TOX_ENV: "py33"
+
+    - PYTHON: "C:\\Python34-x64"
+      TOX_ENV: "py34"
+
+    - PYTHON: "C:\\Python35-x64"
+      TOX_ENV: "py35"
+
+    - PYTHON: "C:\\Python36-x64"
+      TOX_ENV: "py36"
+
+install:
+  - "%PYTHON%\\python.exe -m pip install tox"
+
+build: off
+
+test_script:
+  - "%PYTHON%\\python.exe -m tox -e %TOX_ENV%"