0.2.2-pre
Update README content

- Add features section;
- Add documentation for cldr.main(), cldr.supplemental(),
  cldr.supplemental.timeData.allowed(), cldr.supplemental.timeData.preferred(),
  cldr.supplemental.weekData.firstDay(), and
  cldr.supplemental.weekData.firstDay();
- Make it more clear on relation to 8b8aead "Drop Cldr.loadUnresolved() in favor
  of Cldr.load()";