Reintroduce author list and copyright notice

Closes spring-projectsgh-23049

Author: Jay Bryant

src/docs/asciidoc/index.adoc

@@ -24,3 +24,16 @@ WebSocket.
 <<integration.adoc#spring-integration, Integration>> :: Remoting, JMS, JCA, JMX,
 Email, Tasks, Scheduling, Caching.
 <<languages.adoc#languages, Languages>> :: Kotlin, Groovy, Dynamic Languages.
+
+Rod Johnson, Juergen Hoeller, Keith Donald, Colin Sampaleanu, Rob Harrop, Thomas Risberg,
+Alef Arendsen, Darren Davison, Dmitriy Kopylenko, Mark Pollack, Thierry Templier, Erwin
+Vervaet, Portia Tung, Ben Hale, Adrian Colyer, John Lewis, Costin Leau, Mark Fisher, Sam
+Brannen, Ramnivas Laddad, Arjen Poutsma, Chris Beams, Tareq Abedrabbo, Andy Clement, Dave
+Syer, Oliver Gierke, Rossen Stoyanchev, Phillip Webb, Rob Winch, Brian Clozel, Stephane
+Nicoll, Sebastien Deleuze, Jay Bryant
+
+Copyright © 2002 - 2019 Pivotal, Inc. All Rights Reserved.
+
+Copies of this document may be made for your own use and for distribution to others,
+provided that you do not charge any fee for such copies and further provided that each
+copy contains this Copyright Notice, whether distributed in print or electronically.