Attempt to get build running on both 3.2 & nightlies

.travis.yml

@@ -11,7 +11,7 @@ install:
   - "python setup.py develop"
   - "pip install ."
   - "pip install pytest coveralls collective.dist"
-  - pip install $(python -c "import sys; print('coverage>4a1' if sys.version_info > (3,3) else 'coverage<4')")
+  - pip install --pre $(python -c "import sys; print('coverage>4.0a1' if sys.version_info > (3,3) else 'coverage<4')")
   - "git config --global user.email 'user@test.com'"
   - "git config --global user.name 'Test User'"
   - 'echo "[server-login]\nusername:testuser\npassword:testpass" > ~/.pypirc'