documentation update

[ttz642]

Martin,

Issue #21 is really due to misunderstanding of the documentation.

Perhaps a few more clarifications to address this.

Login method add:
console.log('Region: ', auth.region);

serverless
Need to put code in async function because if you just copy and paste it doesn't work.

Introduction
Make a note that the region assigned when your eWeLink account is initially created may not be what you expect and you should check what server/region with either login or getRegion return.

[skydiver]

Thanks for the suggestions @ttz642

Added your feedback to the documentation.

Will wait a little more before modify the introduction.