v1.0.0a2 broke the library with the attempt to import the build number from Travis via the environment variable, which obviously vanishes outside of the CI system. Fixed. Will need a different solution if I really want/need build numbering inside the library version number.
Todo
Still struggling to get [PyPI](https://pypi.python.org/pypi/pyunsplash) publishing automated via [Travis-Ci](https://travis-ci.org/salvoventura/pyunsplash) after tag commits.