Doc improvements + small updates (webpack 4)

[Offirmo]

No description provided.

[swyxio]

thanks for the PR - we will roll this into #15 soon

[swyxio]

thank you for this Offirmo! pulled your Readme changes here 3209976 and I'm not sure about the node and error message but we can handle that in a separate update if necessary.

closing for now

[Offirmo]

@sw-yx

1. the node version was a bother, it should be the most recent stable, it's 100% gain 0% loss here. If AWS supports it, why not using the latest stable?

2. the error message corresponds to a case I was bitten by. Currently there is no clear message if the build finds no function files. (usually due to a misconfigured directory)

[Offirmo]

@sw-yx P.S. thanks for your awesome work and tool!

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[swyxio]

i think we have addressed your concerns here - if any thing else you'd like to see changed please open an issue!