Starter templates

[bgourlie]

The current starter template when opening Ellie is a very simple program. When I want to quickly repro an issue or model a more complex app, I find myself spending a few minutes setting up a basic program with a model and update function.

[bgourlie]

Perhaps use this as one of the templates. It would be pretty cool then to add small links under the code snippets in the Elm guide to open the examples in Ellie.