ci: Enable Appveyor.

Author: ankostis

.appveyor.yml

@@ -0,0 +1,49 @@
+# CI on Windows via appveyor
+environment:
+
+    matrix:
+        ## MINGW
+        #
+      - PYTHON: "C:\\Python2"
+        PYTHON_VERSION: "2.7"
+      - PYTHON: "C:\\Python34-x64"
+        PYTHON_VERSION: "3.4"
+      - PYTHON: "C:\\Python35-x64"
+        PYTHON_VERSION: "3.5"
+      - PYTHON: "C:\\Miniconda35-x64"
+        PYTHON_VERSION: "3.5"
+        IS_CONDA: "yes"
+
+install:
+    - set PATH=%PYTHON%;%PYTHON%\Scripts;%PATH%
+
+    ## Print configuration for debugging.
+    #
+    - |
+        echo %PATH%
+        uname -a
+        where python pip pip2 pip3 pip34
+        python --version
+        python -c "import struct; print(struct.calcsize('P') * 8)"
+
+    - IF "%IS_CONDA%"=="yes" (
+        conda info -a &
+        conda install --yes --quiet  pip
+      )
+    - pip install  nose wheel coveralls
+
+    ## For commits performed with the default user.
+    - |
+        git config --global user.email "[email protected]"
+        git config --global user.name "Travis Runner"
+
+    - pip install -e .
+
+build: false
+
+test_script:
+    -   IF "%PYTHON_VERSION%"=="3.5" (
+            nosetests -v --with-coverage
+        ) ELSE (
+            nosetests -v
+        )