message: Update readme with the new methods
diff: @@ -25,11 +25,19 @@ Downalod and extract the data from https://www.epa.gov/sites/production/files/20
  $ wget https://www.epa.gov/sites/production/files/2020-01/egrid2018_all_files.zip
  $ unzip egrid2018_all_files.zip
  -Load data from the XLSX files, for now only this one is supported::
  +Load utility emssions data from the XLSX files, for now only this one is supported::
  - $ node index.js load eGRID2018_Data_v2.xlsx NRL18 -u <couchdb_username> -p <couchdb_password>
  + $ node index.js load_utility_emissions eGRID2018_Data_v2.xlsx NRL18 -u <couchdb_username> -p <couchdb_password>
  +
  +Load utility lookup data from the XLSX file Utility_Data_2019_Data_Early_Release.xlsx ::
  +
  + $ node index.js load_utility_identifiers Utility_Data_2019_Data_Early_Release.xlsx -u <couchdb_username> -p <couchdb_password>
  See the data that was loaded in CouchDB::
  $ node index.js list -u <couchdb_username> -p <couchdb_password>
  +Query for emssions factor for a given utility::
  +
  + $ node index.js get_emmissions_factor 34 2018 -u <couchdb_username> -p <couchdb_password>
  +
  