Windows-Python compile error fixed (#1020)

examples/tutorial_api_python/CMakeLists.txt

 ### Add Python Test
-configure_file(openpose_python.py openpose_python.py)
+configure_file(openpose_test.py openpose_test.py)
 configure_file(1_body_from_image.py 1_body_from_image.py)
 configure_file(2_whole_body_from_image.py 2_whole_body_from_image.py)
 configure_file(3_heatmaps_from_image.py 3_heatmaps_from_image.py)

scripts/travis/run_tests.sh

@@ -40,7 +40,7 @@ if [[ $RUN_EXAMPLES == true ]] ; then
   if [[ $WITH_PYTHON == true ]] ; then
     echo "Python API C++: OpenPose demo..."
     cd build/examples/tutorial_api_python
-    python openpose_python.py --net_resolution -1x32 --image_dir ../../../examples/media/ --write_json output/ --display 0 --render_pose 0
+    python openpose_test.py --net_resolution -1x32 --image_dir ../../../examples/media/ --write_json output/ --display 0 --render_pose 0
     echo " "
     # Note: All Python examples require GUI
   fi