First travis.yml for oauth2client.

This adds a simple `.travis.yml` with support for python 2.6, 2.7, and pypy,
and compacts a few lines in `tox.ini`.

.travis.yml

@@ -0,0 +1,13 @@
+language: python
+python: 2.7
+env:
+  - TOX_ENV=py26
+  - TOX_ENV=py27
+  - TOX_ENV=pypy
+install:
+  - pip install tox
+  - pip install .
+script:
+  - tox -e $TOX_ENV
+notifications:
+  - email: false

tox.ini

@@ -10,9 +10,4 @@ deps = keyring
        webtest
        nose
 setenv = PYTHONPATH=../google_appengine
-
-[testenv:py26]
-commands = nosetests --ignore-files=test_appengine\.py
-
-[testenv:py27]
 commands = nosetests --ignore-files=test_appengine\.py