Merge branch 'next'

* next:
  Fix non-ASCII character in README.
  Fix non-ASCII character in gemspec info.
  Add more interaction fields to the JSON output.
  Improve the runs/new JSON output.
  Refactor full run JSON output.
  Rename the saved_status field in the JSON output.
  Move the status_message field in the JSON output.
Merge branch 'next'

* next:
  [TAV-511] Don't save run log if it's an empty file.
  [TAV-508] Allow workers to run against different servers.
Remove I18n support todo item from readme.

This is now done.
Add note about JSON interface to the Readme.
Add a note about the API Docs to the Readme.