change appveyor build order

appveyor.yml

@@ -11,18 +11,19 @@ clone_depth: 50
 init:
   - "ECHO %PYTHON_VERSION% %MINICONDA%"
 
-install:
+build_script:
+  - mkdir build && cd build
+  - cmake -DCMAKE_GENERATOR_PLATFORM=x64 .. && cmake --build . --target ALL_BUILD --config Release
+  - cd ..
+
+test_script:
   - "set PATH=%MINICONDA%;%MINICONDA%/Scripts;%PATH%"
   - conda config --set always_yes yes --set changeps1 no
   - conda update -q conda
   - conda info -a
   - conda install --yes numpy scipy scikit-learn pandas matplotlib
   - pip install pep8 pytest
-  
-build_script:
-  - mkdir build && cd build
-  - cmake -DCMAKE_GENERATOR_PLATFORM=x64 .. && cmake --build . --target ALL_BUILD --config Release
-  - cd ../python-package && python setup.py install && cd ..
+  - cd python-package && python setup.py install && cd ..
   - pytest tests/c_api_test/test.py
   - pytest tests/python_package_test
   - pep8 --ignore=E501 --exclude=./compute,./docs .