Test with py36 instead of py35

setup.py

@@ -53,6 +53,7 @@ setup(name='cloudbridge',
           'Programming Language :: Python :: 3',
           'Programming Language :: Python :: 3.4',
           'Programming Language :: Python :: 3.5',
+          'Programming Language :: Python :: 3.6',
           'Programming Language :: Python :: Implementation :: CPython',
           'Programming Language :: Python :: Implementation :: PyPy'],
       test_suite="test"

tox.ini

@@ -4,11 +4,11 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py27, py35, pypy
+envlist = py27, py36, pypy
 
 [testenv]
 commands = {envpython} -m coverage run --branch --source=cloudbridge --omit=cloudbridge/cloud/interfaces/* setup.py test
 passenv = AWS_ACCESS_KEY AWS_SECRET_KEY OS_AUTH_URL OS_PASSWORD OS_TENANT_NAME OS_USERNAME OS_REGION_NAME NOVA_SERVICE_NAME CB_IMAGE_AWS CB_INSTANCE_TYPE_AWS CB_PLACEMENT_AWS CB_IMAGE_OS CB_INSTANCE_TYPE_OS CB_PLACEMENT_OS CB_TEST_PROVIDER CB_USE_MOCK_PROVIDERS
 deps =
     -rrequirements.txt
-    coverage
+    coverage