How to deal with warnings in examples?

[andys8]

This is a minor issue. I was wondering if we can or should address warnings shiowing up in the default examples.

Warnings

Options

• Keep the examples as they are and show the warnings
• Change the code examples (e.g. add type annotation to main)
• Change Try-PureScript to hide these specific warnings (main type signature, TryPureScript import)

[JordanMartinez]

We should update the examples so that the warnings no longer appear.

[andys8]

Addressed in #286