Not found link in the README about [basic example]

[overheat]

Looks the URL link in the README for basic example is not found.

[bahildebrand]

Good catch, I'll update the link.

[coltonweaver]

@bahildebrand When you take care of this can you remove the type Error = Box<dyn std::error::Error + Send + Sync + 'static>; that I forgot to remove from the example code in the README.md in #298?