Need to Add Servers property for URL prefixing Code

[chrispward]

I use this project frequently.
We use alot of prefixing of our url's etc.
I need to support the server property of openapi 3.x.
I've figured out and tested how to add it but would like it added to project rather than create another fork...

Its a extra property on blueprint and then adds a server spec in the index file if variable is set.
I made it optional so not to affect existing code.

flaskswaggerui-add-server.zip
Cheers
Chris