Updates to README.md

[robcamer]

Purpose

The README.md has some typos and omissions (environment variables) and does not have instructions for Windows.

Does this introduce a breaking change?

[ ] Yes
[x ] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[x] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code Walk through the updated README.md to check the commands.

What to Check

Verify that the following are valid

• The commands for Windows work successfully
• The commands for Linux work successfully.

Other Information

I work at MSFT and with gov customers. Looking to help. Thanks!