PyPI release

[osma]

It should be possible to install Annif from PyPI.

There is a test build on TestPyPI. Outstanding issues:

• README is incorrectly formatted - probably need to specify it's in Markdown format
• cannot find config.py since it's outside the annif module - need to think about how to handle configuration

[osma]

There is now a new 0.36 release on TestPyPI: https://test.pypi.org/manage/project/annif/releases/

[osma]

Moving to v0.37 since v0.36 is already out. But basically this involves testing the v0.36 release that is now on TestPyPI and if everything works, upload it (or a subsequent v0.36.N patch release) to the real PyPI.
Finally, automate the upload via Travis so that when v0.37 is done, it will be pushed to PyPI automatically.

[osma]

Renamed the package to lowercase "annif" and deleted the "Annif" package from TestPyPI to avoid confusion.

[osma]

Now there's annif 0.36.1 on TestPyPI and trying to install it into a venv like this:

pip install --extra-index-url https://test.pypi.org/simple/ annif

Installing seems to work fine but there is a problem with configuration handling. Annif looks for a projects.cfg file in the current directory only. It's possible to override the default configuration using the ANNIF_SETTINGS environment variable, but it's a bit awkward. I think two things are needed:

1. Make it possible to set the path to projects.cfg with a command line option
2. Make it possible to set the path to projects.cfg using an environment variable such as ANNIF_PROJECTS

[osma]

With #211 implemented, the configuration handling is now good enough. But there's another problem with connexion, swagger-ui is optional since the 2.0 release.

[osma]

Autodeploy via Travis is working, hooray!