Polishing.

Author: gregturn

CONTRIBUTING.adoc

@@ -7,6 +7,21 @@ something, or simply want to hack on the code this document should help you get
 This project adheres to the Contributor Covenant link:CODE_OF_CONDUCT.adoc[code of conduct].
 By participating, you  are expected to uphold this code. Please report unacceptable behavior to [email protected].
 
+=== Code Conventions and Housekeeping
+
+None of these is essential for a pull request, but they will all help.  They can also be
+added after the original pull request but before a merge.
+
+* Use the Spring Data code format conventions. If you use Eclipse you can import formatter settings using the `eclipse-code-formatter.xml` file from the https://raw.githubusercontent.com/spring-projects/spring-data-build/master/etc/ide/eclipse-formatting.xml[Spring Data Build] project. If using IntelliJ, you can use the http://plugins.jetbrains.com/plugin/6546[Eclipse Code Formatter Plugin] to import the same file.
+* Make sure all new `.java` files to have a simple Javadoc class comment with at least an `@author` tag identifying you, and preferably at least a paragraph on what the class is for.
+* Add the ASF license header comment to all new `.java` files (copy from existing files in the project)
+* Add yourself as an `@author` to the .java files that you modify substantially (more than cosmetic changes).
+* Add some Javadocs and, if you change the namespace, some XSD doc elements.
+* A few unit tests would help a lot as well -- someone has to do it.
+* If no-one else is using your branch, please rebase it against the current master (or other target branch in the main project).
+* When writing a commit message please follow http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html[these conventions], if you are fixing an existing issue please add `Fixes gh-XXXX` at the end of the commit message (where XXXX is the issue number).
+* By the way, any contributions are likely to be polished. Don't worry! Just use it as a learning experience as you are slowly jürgenized.
+
 == Using GitHub issues
 
 We use GitHub issues to track bugs and enhancements. If you have a general usage question