Move usage docs back to README.
Move usage docs back to README.
honeybadger-io/honeybadger-js,honeybadger-io/honeybadger-js,honeybadger-io/honeybadger-js,honeybadger-io/honeybadger-js,honeybadger-io/honeybadger-js,honeybadger-io/honeybadger-js