Adds mock for 2.x tests; removes 3.2 deps

Author: 0bsearch

.travis.yml

@@ -13,7 +13,7 @@ install:
 - pip install codecov
 - if [[ "$TRAVIS_PYTHON_VERSION" == 2.6* ]]; then travis_retry pip install unittest2; fi
 - if [[ "$TRAVIS_PYTHON_VERSION" == 2.6* ]]; then travis_retry pip uninstall -y pbr; fi
-- if [[ "$TRAVIS_PYTHON_VERSION" == "3.2" ]]; then travis_retry pip install coverage==3.7.1; fi
+- if [[ "$TRAVIS_PYTHON_VERSION" == 2* ]]; then travis_retry pip install mock; fi
 - if [[ "$TRAVIS_PYTHON_VERSION" != "3.2" ]]; then travis_retry pip install coverage; fi
 - python setup.py install
 - pip install codecov