mention windows support in the readme; add MacOS classifier to setup.py

Author: Ivan Dlugos

README.md

@@ -9,6 +9,7 @@ ObjectBox is a superfast database for objects, now also available for Python wit
     * Linux ARMv6hf (e.g. Raspberry PI Zero)
     * Linux ARMv7hf (e.g. Raspberry PI 3)
     * MacOS 64-bit
+    * Windows 64-bit
 
 Getting started
 ---------------

setup.py

@@ -27,7 +27,7 @@
         "Programming Language :: C++",
 
         'Operating System :: POSIX :: Linux',
-        # 'Operating System :: MacOS',
+        'Operating System :: MacOS',
         'Operating System :: Microsoft :: Windows',
 
         "Topic :: Database",