[Pharo-dev] New book: Pharo with Style

Hello Fellow Pharoers I'm happy to announce a new little book to improve the culture around Pharo. I will revise it in the future so you can feel free to send feedback and pull requests to https://github.com/SquareBracketAssociates/Booklet-PharoWithStyle Stef "The best way to predict the future is to invent" so I do it.