Removed django master from build matrix

Author: maryokhin

{{ cookiecutter.repo_name }}/tox.ini

@@ -1,7 +1,7 @@
 [tox]
 envlist =
-       py27-flake8,
-       {py27,py33,py34}-django{1.6,1.7,master}-drf{2.4.3,2.4.4,3.0}
+       py27-{flake8,docs},
+       {py27,py33,py34}-django{1.6,1.7}-drf{2.4.3,2.4.4,3.0}
 
 [testenv]
 commands = ./runtests.py --fast
@@ -10,7 +10,6 @@ setenv =
 deps =
        django1.6: Django==1.6.3
        django1.7: Django==1.7
-       djangomaster: https://github.com/django/django/zipball/master
        drf2.4.3: djangorestframework==2.4.3
        drf2.4.4: djangorestframework==2.4.4
        drf3.0: https://github.com/tomchristie/django-rest-framework/archive/3.0-beta.zip
@@ -21,3 +20,8 @@ commands = ./runtests.py --lintonly
 deps =
        pytest==2.5.2
        flake8==2.2.2
+
+[testenv:py27-docs]
+deps =
+       mkdocs>=0.11.1
+commands = mkdocs build