Tidy up registry csv here

[rufuspollock]

We want to tidy up registry, so it is up to date

Acceptance criteria

• [x] examples datasets moved to separate repo https://github.com/datapackage-examples/registry
• [x] README is updated
• [x] renamed core-status.csv to core-list.csv and core-status-testing to core-list-testing.csv, plus old core-list.csv is removed
• [x] added new column modified about frequency information(year, month, day, quarter) to core-list.csv
• [x] datapackage.json is updated for new core-list.csv
• [x] published on datahub.io

Tasks

• [x] examples should move to the datapackage-examples organization (call it registry repo)
• [x] update the README instructions for index.js usage ...
• [x] rename core-status to core-list.csv (and core-status-testing to core-list-testing.csv)
• [x] merge in to core-list the frequency information (year, month, day, quarter)
  • [ ] up to date
• [x] update the datapackage.json (just core-list.csv - ignore testing)
• [x] push to datahub.io/core/registry - Registry (list) of Core Datasets

[rufuspollock]

@Mikanebu is this now done? Can we close?

[Mikanebu]

FIXED, published registry https://datahub.io/core/registry, examples registry https://github.com/datapackage-examples/registry