Use US spelling for acknowledgments

book/intro/acknowledgments.tex

@@ -0,0 +1,22 @@
+\chapter{Acknowledgments}%
+\label{ch:Acknowledgments}
+This book would not have been possible without your help.
+With all your donations I~have been able to focus on finishing
+this book. Your continuous support allows me to focus
+on improving this book even more.
+
+Furthermore many of you have contributed and improved the
+instructions, fixed spelling mistakes and/or provided
+feedback on the content. Each of you has made this book
+better.
+
+By providing this book free of charge,
+we can enable more people around the world to bake delicious sourdough
+bread at home.
+
+Thank you very much for your support!\\
+
+\textbf{Big shout-out to all the initial supporters who helped launching this
+project:\\}
+
+\input{supporters.csv}