Verify with python 3.5.1

[krishnasrinivas]

@xtream1101 reported issue with set policy in python 3.5.1:

File "/Users/eddyhintze/Virtualenvs/py3/py3/lib/python3.5/site-packages/minio/api.py", line 361, in set_bucket_policy
    bucket_name, prefix)
  File "/Users/eddyhintze/Virtualenvs/py3/py3/lib/python3.5/site-packages/minio/policy.py", line 496, in set_policy
    append_statements(out, ns)
  File "/Users/eddyhintze/Virtualenvs/py3/py3/lib/python3.5/site-packages/minio/policy.py", line 372, in append_statements
    _append_statement(statements, s)
  File "/Users/eddyhintze/Virtualenvs/py3/py3/lib/python3.5/site-packages/minio/policy.py", line 356, in _append_statement
    _get_action(s) == _get_action(statement) and
  File "/Users/eddyhintze/Virtualenvs/py3/py3/lib/python3.5/site-packages/minio/policy.py", line 57, in _get_action
    if isinstance(action, basestring):
NameError: name 'basestring' is not defined

  File "/Users/eddyhintze/Virtualenvs/py3/py3/lib/python3.5/site-packages/minio-2.0.0-py3.5.egg/minio/api.py", line 372, in set_bucket_policy
  File "/Users/eddyhintze/Virtualenvs/py3/py3/lib/python3.5/site-packages/minio-2.0.0-py3.5.egg/minio/helpers.py", line 417, in get_md5
TypeError: Unicode-objects must be encoded before hashing

File "/Users/eddyhintze/Virtualenvs/py3/py3/lib/python3.5/site-packages/scrapers/__init__.py", line 124, in <module>
    'data')
  File "/Users/eddyhintze/Virtualenvs/py3/py3/lib/python3.5/site-packages/minio-2.0.0-py3.5.egg/minio/api.py", line 372, in set_bucket_policy
TypeError: string argument without an encoding

[krishnasrinivas]

@xtream1101 reported this:

Tested with python2.7.10 & python 3.4.3 & python 3.5.1 and got different errors with each (with fresh repo pull as well as with the changes applied). I was using this code snippet to test with:
from minio import Minio
from minio.policy import Policy

host = ''
access_key = ''
secret_key = ''

s3 = Minio(host,
           access_key=access_key,
           secret_key=secret_key,
           secure=True)

bucket_name = 'test1'

# Check if bucket exists, if not create it
if s3.bucket_exists(bucket_name) is False:
    s3.make_bucket(bucket_name, location="us-east-1")

s3.set_bucket_policy(Policy.READ_ONLY,
                     bucket_name,
                     'data')