update setup.py

Author: jaimesouza

setup.py

@@ -19,12 +19,12 @@
     packages=find_packages(),
     install_requires=required,
     classifiers=[
-        'Development Status :: 4 - Beta'
+        'Development Status :: 4 - Beta',
         'Intended Audience :: Developers',
         'Intended Audience :: Science/Research',
         'Topic :: Scientific/Engineering :: Mathematics',
-        'Topic :: Scientific/Engineering :: Simulation',
-        'License :: OSI Approved :: GPL-3.0 License',
+        'Topic :: Scientific/Engineering :: Physics',
+        'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',