Readme updates nirmit

[nirmdesai]

To make sure we describe the project holistically in terms of the goals and scope.

[shahrokhDaijavad]

I read carefully and checked all the links. Looks good!

1. A few small grammatical issues that Grammarly found and I will fix them after the merge.
2. Under Features of the toolkit, better link for "workflow automation", e.g., a Readme file or a tutorial, not just the directory of code