message: Add pip path into PATH.
diff: @@ -23,7 +23,7 @@ echo on
  @REM
  SET PY_EXE=C:\%PYTHON_DIRECTORY%\python.exe
  SET PIP_EXE=C:\%PYTHON_DIRECTORY%\Scripts\pip.exe
  -SET PATH=%PATH%;C:\%PYTHON_DIRECTORY%
  +SET PATH=C:\%PYTHON_DIRECTORY%;C:\%PYTHON_DIRECTORY%\Scripts;%PATH%
  %PIP_EXE% install flatbuffers==1.12 --upgrade --no-deps
  %PIP_EXE% install setuptools --upgrade
  