fixes #309 example in readme and makes a more complete example

[yepher]

See issue here #309
#309

This fixes the readme example and adds a more complete example so users don't waste time trying to use an invalid example.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

---

Chris Wilson seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}