[Pharo-project] GUI Layouts doc, request for comments

Hi, here's a documentation on Layout with Morphic GUI. Comments are welcome, and thanks to all native english people who can check the text :) http://book.pharo-project.org/book/GUI/PolymorphTutorial/Layout/ Laurent Laffont http://pharocasts.blogspot.com/ http://magaloma.blogspot.com/