Merge pull request #24 from msabramo/testing

Add support for tox (http://tox.testrun.org/) and Travis CI (http://travis-ci.org/)

.gitignore

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+*.pyc
+*.egg-info
+build
+dist
+.tox

.travis.yml

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+language: python
+
+python:
+  - 2.5
+  - 2.6
+  - 2.7
+  # - 3.2
+  # - pypy
+
+script:
+  - python setup.py clean
+  - python setup.py install
+  - python selftest.py

tox.ini

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+# Tox (http://tox.testrun.org/) is a tool for running tests
+# in multiple virtualenvs. This configuration file will run the
+# test suite on all supported python versions. To use it, "pip install tox"
+# and then run "tox" from this directory.
+
+[tox]
+envlist = py25, py26, py27
+
+[testenv]
+commands =
+    {envpython} setup.py clean
+    {envpython} setup.py install
+    {envpython} selftest.py