Update setup.py

Author: maireplus

setup.py

@@ -21,6 +21,8 @@
     version='1.2.8',
     url="https://github.com/ssc-maire/CosRayModifiedISO",
     author='Space Environment and Protection Group, University of Surrey',
+    keywords = 'space physics galactic cosmic ray  ',
+    license='CC BY-NC-SA 4.0',
     install_requires=['importlib_resources>=5.10.0',
                         'numba>=0.56.4',
                         'numpy>=1.21.6',