Add `v0.3.0` documentation `README.md`

[alexcmgit]

Samples

Documentation should have a collection of examples to allow easy usage

Cookbooks

Explain what is happening behind the Dart code

[hpoul]

Any progress on 3.0.0? Are you still working on this plugin? thanks.

[alexcmgit]

no, the development of this package is currently frozen