wasmer expects argument -e instead of -i

[lukeasrodgers]

With the current run-test script, I get this error:

error: unexpected argument '-i' found

  tip: to pass '-i' as a value, use '-- -i'

This appears to be because the CLI options to wasmer run have changed, presumably -i used to be how one specifies an entrypoint, but that is now -e.

Feel free to just close or ignore this issue, I recognize this code is "for demo purposes only" but figured it might help someone else who wanted to mess around with it but had no wasm experience.