The README example needs to be updated

[Nickiel12]

Hello!
I am trying Iced for the first time today, and I got really confused because of the readme. I followed the "Overview" section, but I was getting errors, so I checked with the example for it, and it was different in a few critical places.
Most important, is the fact that, nowhere in the overview, does it mention that impl Counter is actually impl Sandbox for Counter, which is kinda important. There are other things, like fn view(...) -> Column<Message> { which is actually Element<Message> in the examples, and that there needs to be a call to Column::new()..... .into() at the end of the view function.
These things threw me off because the only starting point I know is the readme, and it had incorrect information.
Something else that I haven't seen any explanation about, is how does the Text widget know to update?

[Nickiel12]

also, the 0.3 docs for Sandbox has links to 0.2 examples

[Nickiel12]

It would also be nice to have links to where to find more information about different layouts. Assuming from the fact that we use a Column type, are there others?

[Nickiel12]

Maybe recommend at the end of the readme to run the tour package example for an example of the basic widgets available.

[hecrj]

Duplicate of #531.

The overview is a brief introduction to the Elm Architecture. It focuses on the library concepts. It's not meant to be a detailed example. This should be obvious since there is no main function!

The code is correct and not outdated! You don't need to always return an Element.

Using Sandbox is only one way of many to use the library. It is not essential in any way (e.g. if you write your own event loop).

There already links to the documentation and the examples at the end of the overview!

That said, I will try to further clarify that the code needs to be plugged to iced before running it.