Update README.md with docs for approximate timespans and short/long decimals.
Update README.md with docs for approximate timespans and short/long decimals.
surfdome/twitter-cldr-rb,surfdome/twitter-cldr-rb,4414/twitter-cldr-rb,4414/twitter-cldr-rb,twitter/twitter-cldr-rb,twitter/twitter-cldr-rb,twitter/twitter-cldr-rb,surfdome/twitter-cldr-rb