message: add note to storage readme
diff: @@ -26,15 +26,6 @@ version. These features will be rolled out in future updates._
  });
  ```
  -## Deleting a file
  -
  -```JavaScript
  - blockstack.deleteFile("/hello.txt")
  - .then(() => {
  - // /hello.txt is now removed.
  - })
  -```
  -
  ## Creating an encrypted file
  ```JavaScript
  @@ -78,3 +69,15 @@ the `publish_data` scope during authentication.
  assert(fileContents === "hello world!")
  });
  ```
  +
  +## Deleting a file
  +
  +_Note: deleteFile is currently not implemented. For now, we recommend
  +writing an empty file to wipe data_
  +
  +```JavaScript
  + blockstack.deleteFile("/hello.txt")
  + .then(() => {
  + // /hello.txt is now removed.
  + })
  +```
  