Fix .travis.yml to run tests on 2.5 and 2.6
Fix .travis.yml to run tests on 2.5 and 2.6
epsy/pyflakes,PyCQA/pyflakes,hugovk/frosted,nikolas/pyflakes,timothycrosley/frosted_original_fork,pyflakes/pyflakes,timothycrosley/frosted,janusnic/main-pyflakes,timothycrosley/frosted,hugovk/frosted,bitglue/pyflakes,saper/main-pyflakes,mattcaldwell/frosted,jayvdb/pyflakes,asmeurer/pyflakes