message: document storage methods we expose
diff: export {
  - getFile, putFile
  + /**
  + * Retrives the specified file from the app's data store.
  + * @param {String} path - the path to the file to read
  + * @returns {Promise} that resolves to the raw data in the file
  + * or rejects with an error
  + */
  + getFile
  +} from 'blockstack-storage'
  +
  +export {
  + /**
  + * Stores the data provided in the file specified.
  + * @param {String} path - the path to store the data in
  + * @param {String|Buffer} contents - the data to store in the file
  + * @return {Promise} that resolves if the operation succeed and rejects
  + * if it failed
  + */
  + putFile
  } from 'blockstack-storage'
  