fix pre-requisite in setup.py

setup(name='CSSTSim', 

    version='0.3', 

    packages=find_packages(),

    install_requires=[

        'numpy>=1.18.5',

        'galsim>=2.2.4',

        'pyyaml>=5.3.1',

        'astropy>=4.0.1',

        'scipy>=1.5.0',

        'mpi4py>=3.0.3',

        'sep>=1.0.3',

        'healpy>=1.14.0',

        'h5py>=2.10.0',

        'Cython>=0.29.21'

        'numba>=0.50.1'

    ],

    # install_requires=[

    #     'numpy>=1.18.5',

    #     'galsim>=2.2.4',

    #     'pyyaml>=5.3.1',

    #     'astropy>=4.0.1',

    #     'scipy>=1.5.0',

    #     'mpi4py>=3.0.3',

    #     'sep>=1.0.3',

    #     'healpy>=1.14.0',

    #     'h5py>=2.10.0',

    #     'Cython>=0.29.21'

    #     'numba>=0.50.1'

    # ],

    package_data = {

        'ObservationSim.Astrometry.lib': ['libshao.so'], 

        'ObservationSim.MockObject.data': ['*.dat'],