update version to 2.1.1

Author: gkorland

setup.py

@@ -9,7 +9,7 @@ def read_all(f):
 
 setup(
     name='redisgraph',
-    version='2.0',
+    version='2.1.1',
     description='RedisGraph Python Client',
     long_description=read_all("README.md"),
     long_description_content_type='text/markdown',