Add configuration example to readme

[MNF]

It will be good to add to readme an example of configuration as an alternative to hardcoded new LoggerConfiguration() .Enrich.WithExceptionDetails()- something like

{
"Serilog": {
"MinimumLevel": "Debug",
"Using": [ "Serilog.Exceptions" ],
"Enrich": [ "WithExceptionDetails"],
"WriteTo": [
{ "Name": "Console" }
]
}
}

I haven’t tried it yet.
Will it work ?

[RehanSaeed]

It should work. Will accept a PR!