Run the full test suite on Travis and add instructions to use tox locally.

.travis.yml

@@ -17,7 +17,7 @@ install:
     # disables the cache.
     - travis_retry pip install -U tox cython greenlet pep8 pyflakes
 script:
-    - if [[ $TRAVIS_PYTHON_VERSION == '2.7' && $LINT == true ]]; then python setup.py develop && make travis_test_linters; elif [[ $LINT == false ]]; then python setup.py develop && make toxtest; fi
+    - if [[ $TRAVIS_PYTHON_VERSION == '2.7' && $LINT == true ]]; then python setup.py develop && make travis_test_linters; elif [[ $LINT == false ]]; then python setup.py develop && make fulltoxtest; fi
 notifications:
   email: false
 # cache: pip seems not to work

README.rst

@@ -40,12 +40,24 @@ To install the latest development version:
 running tests
 -------------
 
+There are a few different ways to run the tests. To simply run the
+tests on one version of Python during development, try this:
+
   python setup.py build
 
   cd greentest
 
   PYTHONPATH=.. python testrunner.py --config ../known_failures.py
 
+Before submitting a pull request, it's a good idea to run the tests
+across all supported versions of Python, and to check the code quality
+using pep8 and pyflakes. This is what is done on Travis CI. Locally it
+can be done using tox:
+
+  pip install tox
+
+  tox
+
 
 .. _gevent: http://www.gevent.org
 .. _greenlet: http://pypi.python.org/pypi/greenlet
@@ -61,4 +73,3 @@ running tests
 .. _mailing list: http://groups.google.com/group/gevent
 .. _blog: http://blog.gevent.org
 .. _twitter (@gevent): http://twitter.com/gevent
-