feat: generate a README.md file when creating a new library

[klauskpm]

Bug Report or Feature Request (mark with an x)

- [ ] bug report -> please search issues before submitting
- [x] feature request

Command (mark with an x)

- [ ] new
- [ ] build
- [ ] serve
- [ ] test
- [ ] e2e
- [x] generate
- [ ] add
- [ ] update
- [ ] lint
- [ ] xi18n
- [ ] run
- [ ] config
- [ ] help
- [ ] version
- [ ] doc

Desired functionality

Generate a default README.md file when creating a new library. I think it's more common to have a README.md file on a NPM package than not.

I'd be happy to work on it o/

[alan-agius4]

Good idea.

[klauskpm]

Hey @alan-agius4 , I made the tests work, but, when I run the CLI (ng g lib), after linking it, it didn't create the file. Could you help me on this?

What was done?

Here is the forked repository's commit diff (README.md content is just for testing purposes).

I tried to follow the Development Hints for working on Angular CLI, but the linked package didn't present any changes that I've made.
I've even deleted everything from /packages/schematics/angular/library/files/__projectRoot__ and built it, but the result was the same, no changes on ng g lib.

Am I changing the right place?

[klauskpm]

Just an update. npm pack worked for me.

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