Update README

README.md

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 # Catalyst-In-Chief
 
-This respository contains files related to Jim Whitehurst's June 2016 book, [_Catalyst-In-Chief_](https://opensource.com/open-organization/16/5/year-conversations-about-open-organization).
+This respository contains files related to Jim Whitehurst's June 2016 book, [_Catalyst-In-Chief_](https://opensource.com/open-organization/16/5/year-conversations-about-open-organization). The book is a follow-up to the author's 2015 book, [_The Open Organization_](https://opensource.com/open-organization) (Harvard Business Review Press).
 
-One year after the publication of his 2015 book, [_The Open Organization_](https://opensource.com/open-organization) (Harvard Business Review Press), Red Hat President and CEO Jim Whitehurst explains what the community of innovative thinkers, writers, and practitioners that coalesced around his writing have taught him about the future of management and work.
+## About the book
+
+One year after the publication of _The Open Organization_, Red Hat President and CEO Jim Whitehurst explains what the community of innovative thinkers, writers, and practitioners that coalesced around his writing have taught him about the future of management and work.
 
 _Catalyst-In-Chief_ collects Jim's contributions to the ongoing conversation about the ways open source principles can form the bedrock of the twenty-first century's most innovative organizations—and teaches tomorrow's leaders what they'll need to make those organizations great.
 
+## Repository contents
+
 In this repository, please find:
 
 - The book's cover complete (in .jpg, .pdf, and .tif formats)