ares is not available under pypy

.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 fulltoxtest; fi
+    - if [[ $TRAVIS_PYTHON_VERSION == '2.7' && $LINT == true ]]; then python setup.py develop && make travis_test_linters; elif [[ $LINT == false && $TRAVIS_PYTHON_VERSION == 'pypy' ]]; then python setup.py develop && make toxtest; elif [[ $LINT == false ]]; then python setup.py develop && make fulltoxtest; fi
 notifications:
   email: false
 # cache: pip seems not to work