Azure.Sdk.Tools.TestProxy_1.0.0-dev.20221007.2

Add readme for integration script (#4334)

* Add readme for integration script

* Add update describing time of initial push

* had a really great jump off point. bunch of small adjustments to make the language a bit more terse, etc

* more minor updates

Co-authored-by: scbedd <45376673+scbedd@users.noreply.github.com>