Update API Reference

[BenAdvocatia]

The API Reference seems very outdated. It mentions EnsurePrerequisite and EnsurePrerequisiteAsync, instead of using the updated Init and InitAsync methods. The deprecation of EnsurePrerequisite and EnsurePrerequisiteAsync looks to have been made back in e5ec63d, which was checked in August of last year. This should be updated to reflect the current version of this package to help reduce confusion when people are using it.

Thanks