Merge pull request #1 from vterron/master

Add an informal documentation of the SQL schema
initial configuration
Merge branch 'master' of github.com:ftn/metamedia
db schema fix
initial axes and licenses
fixed schema and ci
api for retrieving axes, retrieving licenses, adding media
Parse a feed and print title, link, description and date of each entry
Strip HTML from the description of each entry — show plain text
Add MetaMedia.get_axes()
Make MetaMedia.get_axes() return a generator of named tuples
Add MetaMedia.get_licenses()
Add README file — explain how to install feedparser and requests
Add get_iso639() module-level function
Add pycountry to the list of required packages
Add unit test for get_iso639()
Add MetaMedia.put_media()