Adding travis support

.travis.yml

@@ -0,0 +1,9 @@
+# http://travis-ci.org/#!/MongoEngine/mongoengine
+language: python
+python:
+    - 2.6
+    - 2.7
+install:
+    - python setup.py install
+script:
+    - python setup.py test

README.rst

@@ -96,3 +96,5 @@ Contributing
 The source is available on `GitHub <http://github.com/MongoEngine/mongoengine>`_ - to
 contribute to the project, fork it on GitHub and send a pull request, all
 contributions and suggestions are welcome!
+
+.. image:: https://secure.travis-ci.org/MongoEngine/mongoengine.png