  deps =
          django110: Django>=1.10,<1.11
          django111: Django>=1.11,<2.0
          django20: Django>=2.0,<2.1
          djangomaster: https://github.com/django/django/archive/master.tar.gz
          -rrequirements/requirements-testing.txt
          -rrequirements/requirements-optionals.txt
  
  [testenv:dist]
 
</s>
        django21: Django>=2.1a1,<2.2
  deps =
          django110: Django>=1.10,<1.11
          django111: Django>=1.11,<2.0
          django20: Django>=2.0,<2.1
        django21: Django>=2.1a1,<2.2
          djangomaster: https://github.com/django/django/archive/master.tar.gz
          -rrequirements/requirements-testing.txt
          -rrequirements/requirements-optionals.txt
  
  [testenv:dist]
keep keep keep add keep keep keep keep keep
 updated tox and travis for django 2.1 alpha1
tox.ini