Clarify package documentation (#100)

* change comment

* rename parameter name for better clarity

* add clarification comment for `Wait()` method

* rewrite package documentation to avoid duplication of examples

Add more documentation for method and types (#79)

* Updated package Godoc

* Updated go code to specify that `WithName()` method is optional

* Added formatting in README.md

* Updated godoc for `WithName()` method

* Updated godoc for `NewWithSignals()` constructor

* Updated app example to use rootCtx

* Updated godoc for `Register()` constructor

* Updated godoc for `Hook` type

Added README.md section about versioning (#73)

Measure time for the Hook execution (#71)

* Measured time for Hook execution

* Updated Example with panic inside the Hook

Added godoc references in documentation (#66)

* Shrunk package Godoc examples

* Added godoc links for other types

Updated go package documentation (#65)

* Fixed code formatting in README.md

* Updated package godoc

* Updated NewWithSignals() godoc

Add examples for `Hook` type (#53)

Add full-fledged example application with HTTP server (#47)

* Added full-fledged runnable example

* Added instructions on how to run the example application

Added async server starter example (#34)

Inlined `waitWG()` utility function (#31)