remove Builder widget

[tattuu]

Thank you for creating this widget.

One question on that is about implementation.

Regarding the part written in doc installing 3, don't you need the Builder widget?

Here is an example

before

ShowCaseWidget(
  builder: Builder(
    builder : (context)=> Somewidget()
  ),
),

after

ShowCaseWidget(
  builder : (context)=> Somewidget()
),