Use correct licence in setup.py (fixes #216) (#217)

Author: BonfaceKilz

setup.py

@@ -48,7 +48,7 @@ def find_stub_files():
       long_description_content_type='text/markdown',
       author='Ivan Levkivskyi',
       author_email='levkivskyi@gmail.com',
-      license='MIT License',
+      license='Apache 2.0',
       url="https://github.com/dropbox/sqlalchemy-stubs",
       py_modules=['sqlmypy', 'sqltyping'],
       install_requires=[