New license for the book, as negotiated with the publisher O'Reilly media. Under CC-BY-SA, translations and other derivatives are now permitted

LICENSE

@@ -1,3 +1,7 @@
 Copyright (c) 2014 Andreas M. Antonopoulos LLC
 
-This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.
+This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/.
+
+This "Free Culture" compliant license was approved by my publisher O'Reilly Media (http://oreilly.com), who understand the value of open source. O'Reilly Media is not just the world's best publisher of technical books but also a strong supporter of an open culture and the sharing of knowledge. 
+
+Thank you O'Reilly!

README.md

@@ -10,7 +10,15 @@ Mastering Bitcoin is a book for developers, but the first two chapters cover bit
 
 # Source 
 
-The book's source code, found in this repository, is a near-final draft before the publisher's editorial process. Please do not submit changes here, instead use the [errata](http://www.oreilly.com/catalog/errata.csp?isbn=0636920032281) page on the publisher's site. 
+The book's source code, found in this repository, kept synchronized with the print and ebook editions. Please do not submit changes here, instead use the [errata](http://www.oreilly.com/catalog/errata.csp?isbn=0636920032281) page on the publisher's site. 
 
 
-<a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc-nd/4.0/88x31.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">Mastering Bitcoin: Unlocking digital crypto-currencies</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://antonopoulos.com/" property="cc:attributionName" rel="cc:attributionURL">Andreas M. Antonopoulos LLC</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/4.0/">Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License</a>.
+<a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-sa/4.0/88x31.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" href="http://purl.org/dc/dcmitype/Text" property="dct:title" rel="dct:type">Mastering Bitcoin</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://antonopoulos.com/" property="cc:attributionName" rel="cc:attributionURL">Andreas M. Antonopoulos LLC</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International License</a>.
+
+This "Free Culture" compliant license was approved by my publisher O'Reilly Media (http://oreilly.com), who understand the value of open source. O'Reilly Media is not just the world's best publisher of technical books but also a strong supporter of an open culture and the sharing of knowledge. 
+
+Thank you O'Reilly!
+
+# Translations
+
+If you are interested in translating this book, please contact the author at info@bitcoinbook.info, for coordination. In some countries, I can help you coordinate with the local offices of O'Reilly Media for local print editions.