Resolved double names, renamed imported library to expressWsLib

[Brampage]

No description provided.

[joepie91]

Thanks for your PR!

This is indeed an issue that needs to be solved, but I think that renaming the instance to expressWsInstance or such and leaving the library itself as expressWs would be a better way to solve it - this would be in line with the convention in Node.js to store a require()d library in a variable named after itself.

Thoughts?

[Brampage]

You're welcome :)
Yes, that sounds better to me.