Updated setup.py

Author: andyjsmith

setup.py

@@ -33,8 +33,8 @@
         "icoextract",
         "yara-python",
         "iced-x86",
-        "python-magic-bin; platform_system == 'Windows'",
-        "python-magic; platform_system != 'Windows'",
+        "python-magic-bin; platform_system == 'Windows' or platform_system == 'Darwin'",
+        "python-magic; platform_system != 'Windows' and platform_system != 'Darwin'",
         "vt-py",
         "matplotlib",
     ],