#18 use current page prop before falling back to page 1 when setting initial page

[codenaz]

What does this MR do?
This MR implements setting the initial page to the current page prop in the event that such value is available and defaults to 1 when it isn't.

Common use case
If you store your current page as a URL query. e.g ?page=3, you can fetch the value of this query parameter when your app loads and pass it to the react-hooks-paginator component as your currentPage prop