Don't clean up output directory (#36)

* prevent to remove root folder and grouped module arguments

* migrate files type from String to URL

* output directory already exist error

* fix CI

minor changes

* typo error in linux - swagger generator

Add README (#18)

* Add README

* Italics to Bold

* Add header image

* Add links to README

* Update year in legal section

* Add list of features to documentation home page.

Update README.md

Update README.md