Added tests for Python 2.5

Should resolve #1.

Author: michaeljohnbarr

.travis.yml

@@ -2,6 +2,7 @@ language:
   python
 
 python:
+  - "2.5"
   - "2.6"
   - "2.7"
   - "3.2"
@@ -42,6 +43,14 @@ matrix:
 #      env: DJANGO="django>=1.4.0,<1.5.0"
 #    - python: "pypy3"
 #      env: DJANGO="django>=1.4.0,<1.5.0"
+    - python: "2.5"
+      env: DJANGO="django>=1.5.0,<1.6.0"
+    - python: "2.5"
+      env: DJANGO="django>=1.6.0,<1.7.0"
+    - python: "2.5"
+      env: DJANGO="django>=1.7.0,<1.8.0"
+    - python: "2.5"
+      env: DJANGO="https://github.com/django/django/archive/master.tar.gz"
     - python: "2.6"
       env: DJANGO="django>=1.7.0,<1.8.0"
     - python: "2.6"