Update LICENSE AND COPYRIGHT section in doc.
Improve abstract to readable version.
Add Map::Tube::Berlin, Map::Tube::Minsk, Map::Tube::NYC, Map::Tube::Tokyo and Map::Tube::Warsaw to SEE ALSO section in doc.
Fix get_shortest_route() method description in doc.
Describe get_all_routes() method as EXPERIMENTAL.
Fix REPOSITORY section in doc.
Add Map::Tube::Kiev and Map::Tube::Sofia to SEE ALSO section in doc.
Add metro name.
Release 0.02 version.
Prepare for 0.03 version.