Get ready for travis-ci

.travis.yml

+language: python
+
+python:
+  - "2.6"
+  - "2.7"
+
+env:
+  - DJANGO=django==1.5 --use-mirrors
+  - DJANGO=django==1.4.5 --use-mirrors
+  - DJANGO=django==1.3.7 --use-mirrors
+
+install:
+  - pip install $DJANGO
+
+script:
+  - python setup.py test
+
+notifications:
+  email: false
+
+matrix:
+  exclude:
+    - python: "3.2"
+      env: DJANGO=django==1.4.5 --use-mirrors
+    - python: "3.2"
+      env: DJANGO=django==1.3.7 --use-mirrors
+