Add broader coverage for Django vs DRF

.travis.yml

@@ -2,13 +2,17 @@ language: python
 python:
   - "2.7"
 env:
-  - DJANGO_VERSION=">=1.4,<1.5"
-  - DJANGO_VERSION=">=1.5,<1.6"
-  - DRF_VERSRION=">=2.0,<2.1"
-  - DRF_VERSRION=">=2.1,<2.2"
-  - DRF_VERSRION=">=2.2,<2.3"
-  - DRF_VERSRION=">=2.3,<2.4"
-install: 
+  # Test against latest Django 1.4 release
+  - DRF_VERSRION=">=2.0,<2.1" DJANGO_VERSION=">=1.4,<1.5"
+  - DRF_VERSRION=">=2.1,<2.2" DJANGO_VERSION=">=1.4,<1.5"
+  - DRF_VERSRION=">=2.2,<2.3" DJANGO_VERSION=">=1.4,<1.5"
+  - DRF_VERSRION=">=2.3,<2.4" DJANGO_VERSION=">=1.4,<1.5"
+  # Test against latest Django 1.5 release
+  - DRF_VERSRION=">=2.0,<2.1" DJANGO_VERSION=">=1.5,<1.6"
+  - DRF_VERSRION=">=2.1,<2.2" DJANGO_VERSION=">=1.5,<1.6"
+  - DRF_VERSRION=">=2.2,<2.3" DJANGO_VERSION=">=1.5,<1.6"
+  - DRF_VERSRION=">=2.3,<2.4" DJANGO_VERSION=">=1.5,<1.6"
+install:
   - pip install Django$DJANGO_VERSION djangorestframework$DRF_VERSION
   - pip install . --use-mirrors
   - pip install -r requirements.txt --use-mirrors