Add .travis.yml for Travis CI (http://travis-ci.org/)

[msabramo]

Here's a sample Travis build for my fork: http://travis-ci.org/#!/msabramo/pypiserver/builds/1680077

To set up Travis CI for your own repo, see http://about.travis-ci.org/docs/user/getting-started/

Output of tox:

[last: 0] marca@SCML-MarcA:~/dev/git-repos/pypiserver$ tox
GLOB sdist-make: /Users/marca/dev/git-repos/pypiserver/setup.py
py25 sdist-reinst: /Users/marca/dev/git-repos/pypiserver/.tox/dist/pypiserver-0.6.0.zip
py25 runtests: commands[0]
=================================================================== test session starts ====================================================================
platform darwin -- Python 2.5.4 -- pytest-2.2.4
collected 49 items 

tests/test_app.py ....................
tests/test_core.py ......................
tests/test_main.py .......

================================================================ 49 passed in 3.29 seconds =================================================================
py26 sdist-reinst: /Users/marca/dev/git-repos/pypiserver/.tox/dist/pypiserver-0.6.0.zip
py26 runtests: commands[0]
=================================================================== test session starts ====================================================================
platform darwin -- Python 2.6.8 -- pytest-2.2.4
collected 49 items 

tests/test_app.py ....................
tests/test_core.py ......................
tests/test_main.py .......

================================================================ 49 passed in 2.47 seconds =================================================================
py27 sdist-reinst: /Users/marca/dev/git-repos/pypiserver/.tox/dist/pypiserver-0.6.0.zip
py27 runtests: commands[0]
=================================================================== test session starts ====================================================================
platform darwin -- Python 2.7.3 -- pytest-2.2.4
collected 49 items 

tests/test_app.py ....................
tests/test_core.py ......................
tests/test_main.py .......

================================================================ 49 passed in 2.32 seconds =================================================================
_________________________________________________________________________ summary __________________________________________________________________________
  py25: commands succeeded
  py26: commands succeeded
  py27: commands succeeded
  congratulations :)

[schmir]

@msabramo thanks!

[schmir]

@msabramo thanks!