Update readme for code of conduct.

See https://github.com/spring-cloud/spring-cloud-build/issues/26

README.adoc

@@ -19,7 +19,50 @@ Spring Cloud Starters are curated sets of dependencies focused on a particular t
 
 == Contributing
 
-link:https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/docs/src/main/asciidoc/contributing.adoc[]
+Spring Cloud is released under the non-restrictive Apache 2.0 license,
+and follows a very standard Github development process, using Github
+tracker for issues and merging pull requests into master. If you want
+to contribute even something trivial please do not hesitate, but
+follow the guidelines below.
+
+=== Sign the Contributor License Agreement
+Before we accept a non-trivial patch or pull request we will need you to sign the
+https://support.springsource.com/spring_committer_signup[contributor's agreement].
+Signing the contributor's agreement does not grant anyone commit rights to the main
+repository, but it does mean that we can accept your contributions, and you will get an
+author credit if we do.  Active contributors might be asked to join the core team, and
+given the ability to merge pull requests.
+
+=== Code of Conduct
+This project adheres to the Contributor Covenant https://github.com/spring-cloud/spring-cloud-build/blob/master/docs/src/main/asciidoc/code-of-conduct.adoc[code of
+conduct]. By participating, you  are expected to uphold this code. Please report
+unacceptable behavior to spring-code-of-conduct@pivotal.io.
+
+=== 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 Framework 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-cloud/spring-cloud-build/master/spring-cloud-dependencies-parent/eclipse-code-formatter.xml[Spring
+  Cloud 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).
 
 == Building and Deploying
 

docs/src/main/ruby/generate_readme.sh

@@ -18,7 +18,7 @@ file = ARGV[0] if ARGV.length>0
 
 srcDir = File.dirname(file)
 out = "// Do not edit this file (e.g. go instead to docs/src/main/asciidoc)\n\n"
-doc = Asciidoctor.load_file file, safe: :safe, parse: false
+doc = Asciidoctor.load_file file, safe: :safe, parse: false, attributes: 'allow-uri-read'
 out << doc.reader.read
 
 unless options[:to_file]