Initialization Error

[Michał]

Hi, I have tried to use your google auth example from examples but I am getting:

`Error: Problem with the flags given to your Elm program on initialization.

Json.Decode.oneOf failed in the following 2 ways:

(1) Problem with the given value:

undefined

Expecting null

(2) Problem with the given value:

undefined

Expecting a LIST`

Elm version: 0.19.1

[Matthias Benkort]

Seems like a problem unrelated to the library but with some missing flags when initializing the elm application.

main : Program (Maybe (List Int)) Model Msg

Looking at the examples, it seems that the actual index.html and the initialization code is not committed on the master branch :s .. but it is on the gh-pages:

https://github.com/truqu/elm-oauth2/blob/gh-pages/google/implicit/index.html

As you can see, the examples expect either undefined or a list of bytes to be given as an argument:

    const app = Elm.Main.init({
        node: document.getElementById("app"),
        flags: rememberedBytes()
    });

I am not sure why the index.html wasn't included, probably an oversight. Sorry!

[Matthias Benkort]

Now versioned on master.

I've also added some instructions about how to build and run the examples locally 👍