update version to 2.0

Author: gkorland

setup.py

@@ -9,14 +9,15 @@ def read_all(f):
 
 setup(
     name='redisgraph',
-    version='2.1',
+    version='2.0',
     description='RedisGraph Python Client',
     long_description=read_all("README.md"),
     long_description_content_type='text/markdown',
     url='https://github.com/redislabs/redisgraph-py',
     packages=find_packages(),
     install_requires=requirements,
     classifiers=[
+        'Development Status :: 4 - Beta',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: BSD License',
         'Programming Language :: Python :: 2.7',