Remove py2.7 and py3.4 from windows CI

Because life is short.

Author: drvinceknight

appveyor.yml

@@ -1,10 +1,11 @@
 environment:
   matrix:
-    - PYTHON: "C:\\Python27"
-    - PYTHON: "C:\\Python34"
+    #- PYTHON: "C:\\Python27"
+    #- PYTHON: "C:\\Python34"
     - PYTHON: "C:\\Python35"
 install:
   - "%PYTHON%\\python.exe -m pip install -r requirements.txt"
 build: off
 test_script:
   - "%PYTHON%\\python.exe -m unittest discover"
+  - "%PYTHON%\\python.exe doctests.py"