Consolidate Django and test requirements

CONTRIBUTING.md

@@ -62,7 +62,6 @@ To run the tests, clone the repository, and then:
     virtualenv env
     env/bin/activate
     pip install -r requirements.txt
-    pip install -r requirements-test.txt
 
     # Run the tests
     ./runtests.py

docs/topics/contributing.md

@@ -62,7 +62,6 @@ To run the tests, clone the repository, and then:
     virtualenv env
     source env/bin/activate
     pip install -r requirements.txt
-    pip install -r requirements-test.txt
 
     # Run the tests
     ./runtests.py

docs/topics/third-party-resources.md

@@ -93,7 +93,7 @@ The cookiecutter template includes a `runtests.py` which uses the `pytest` packa
 
 Before running, you'll need to install a couple test requirements.
 
-    $ pip install -r requirements-test.txt
+    $ pip install -r requirements.txt
 
 Once requirements installed, you can run `runtests.py`.
 

requirements-test.txt

-# Test requirements
-pytest-django==2.6
-pytest==2.5.2
-pytest-cov==1.6
-flake8==2.2.2
-
-# Optional packages
-markdown>=2.1.0
-PyYAML>=3.10
-defusedxml>=0.3
-django-guardian==1.2.4
-django-filter>=0.5.4
-django-oauth-plus>=2.2.1
-oauth2>=1.5.211
-django-oauth2-provider>=0.2.4

requirements.txt

+# Minimum Django version
 Django>=1.4.11
+
+# Test requirements
+pytest-django==2.6
+pytest==2.5.2
+pytest-cov==1.6
+flake8==2.2.2
+
+# Optional packages
+markdown>=2.1.0
+PyYAML>=3.10
+defusedxml>=0.3
+django-guardian==1.2.4
+django-filter>=0.5.4
+django-oauth-plus>=2.2.1
+oauth2>=1.5.211
+django-oauth2-provider>=0.2.4