Make doctests pass on python 2.7.5
Making doctests happy
Fix the docs of EntryBase (None by default)

* Now running nosetests no longer complains about all the doctests.
First shot of travis to see what fails
Support for python 2.6 and 2.7 CI tests

* Travis does not support old skool python
* As for Python 3, there's a lot of work that needs to be done
* See - https://travis-ci.org/wari/pyblosxom/builds/14639665 for details
* Not implemented:

  - Things like acronym file
  - Akismet tests
  - Not sure about the foo package error.
Merge pull request #37 from wari/travis_integration

Travis integration