Enhancement request: better documentation

[asomers]

The documentation for this library is incomplete. It could really use some thorough API documentation. For example, what is a Registry? When does the collect method get called, and what is its contract?

[Asgoret]

Documentation is awful...I wrote function and client show anything else except my function and I can't understand why in console everything alright.

[migueleliasweb]

It's kinda true. The examples are surprisingly shallow and if you need anything other than a simple Gauge using the simple start_http_server you're in for a rollercoaster ride. 😂

[tarrenj]

Oh man, I agree with this wholeheartedly!