DATAES-154 - Polish reference docs before release.

Updated copyright years. Fall back to locally available Spring Data Commons reference docs as the remote variant doesn't seem to work currently. Included reference to the return type listing appendix from Spring Data Commons.

Author: christophstrobl

src/main/asciidoc/index.adoc

@@ -4,9 +4,9 @@ BioMed Central Development Team
 :revdate: {localdate}
 :toc:
 :toc-placement!:
-:spring-data-commons-docs: https://raw.githubusercontent.com/spring-projects/spring-data-commons/master/src/main/asciidoc
+:spring-data-commons-docs: ../../../../spring-data-commons/src/main/asciidoc
 
-(C) 2013-2014 The original author(s).
+(C) 2013-2015 The original author(s).
 
 NOTE: 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.
 
@@ -32,4 +32,5 @@ include::reference/elasticsearch-misc.adoc[]
 include::{spring-data-commons-docs}/repository-namespace-reference.adoc[]
 include::{spring-data-commons-docs}/repository-populator-namespace-reference.adoc[]
 include::{spring-data-commons-docs}/repository-query-keywords-reference.adoc[]
+include::{spring-data-commons-docs}/repository-query-return-types-reference.adoc[]
 :leveloffset: -1