Fix version comparison error with tox and travis
Fix version comparison error with tox and travis

For some reason, `python setup.py --version` is more verbose then
expected when executed inside tox env by travis.
Workaround this by discarding the first lines of output (unexpected
garbage).

blue-yonder/pyscaffold,cpaulik/pyscaffold,blue-yonder/pyscaffold,cpaulik/pyscaffold