Polish
Add documentation tool-chain

Generate html, pdf and epub documentation using asciidoctor+docbook.

See gh-295
Add initial reference manual documentation

See gh-295
Port "how-to" section to the reference manual

Copy the existing markdown How-to readme content to the user manual,
converting to asciidoc.

See gh-295
Add cloud deployment documentation

Add a "cloud deployment" section to the Spring Boot reference
manual.

See gh-295
Merge reference documentation branch

Fixed gh-295
Fix failing JMS test

Fix test failure caused by URL -> Url rename in
commit 22e397cda29bbfe89c0da01341d5b3fb7514ed11
Upgraded to Spring Data Codd SR1.

Fixes gh-490
Polish
Polish javadoc formatting
Set correct github tag for generated docs
Add missing main.basedir property to docs pom
Port ViewResolver docs

Port documentation originally added in commit b56bd0a10c76
Port Add Maven example for Tomcat 8

Port Add Maven example for Tomcat 8 from markdown to asciidoc.
(originally from commit 15372cb73786d9a82abbd441b0c9e04a68967829)
Fix some broken documentation links
Remove duplicate documentation

Remove README files that have been since been migrated to the reference
documentation. Also updated remaining markdown files to asciidoctor to
save having a mix of different formats.

Fixed gh-503
Minor doc polish
Add properties syntax highlighting for docs

Fixes gh-495
Remove double quotes from sample in appendix B

Fixes gh-492
Fix typo