Copyright

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©2011 by Manning Publications Co. All rights reserved.

No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by means electronic, mechanical, photocopying, or otherwise, without prior written permission of the publisher, with the exception of the Introduction, Chapter 1, Chapter 6, and the source code throughout, which are available under a Creative Commons (Attribution-NonCommercial 3.0) license. See creativecommons.org/licenses/by-nc/3.0/. Note that Creative Commons distribution of the images in the Introduction and in Chapter 1 is limited to those by Matt Pearson only.

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	Manning Publications Co. 20 Baldwin Road PO Box 261 Shelter Island, NY 11964	Development editor: Jeff Bleiel              Copyeditor: Tiffany Taylor Designer and Typesetter: Irene Korol Scala            Cover design: Irene Korol Scala             Cover image: Matt Pearson

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Dedication

dedicated to my boys, Rudy and Oz