ASA-150: add classifiers to setup.py

Author: bgrnwd

python-package/setup.py

@@ -6,4 +6,12 @@
     description="Programmatically interact with the ASA API",
     author="American Soccer Analysis",
     url="https://github.com/American-Soccer-Analysis/asa-package",
+    classifiers=[
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
+    ],
+    python_requires=">=3.6",
 )