Merge pull request #9 from myint/travis

Add Travis CI test configuration

.travis.yml

@@ -0,0 +1,15 @@
+language: python
+
+python:
+    - "2.5"
+    - "2.6"
+    - "2.7"
+    - "pypy"
+    - "3.2"
+    - "3.3"
+
+install:
+    - python setup.py install
+
+script:
+    - ./tests/tests.sh