Merge pull request #16 from alex/patch-1

Run tests under PyPy, stop testing py2.5 .

Author: Brian Warner

.travis.yml

@@ -1,10 +1,10 @@
 language: python
 python:
-  - "2.5"
   - "2.6"
   - "2.7"
   - "3.2"
   - "3.3"
+  - "pypy"
 install: true
 script:
   - python setup.py test