Add some basic release instructions

Author: headius

README.md

@@ -330,6 +330,12 @@ You can **not** use JRuby-Rack with Bundler directly from the git (or http) URL
 is compiled and generated on-demand during the build (it would require us to
 package and push the .jar every time a commit changes a source file).
 
+## Releasing
+
+* Make sure auth is configured for "ossrh" repository ID in your .m2/settings.xml
+* mvn release:prepare
+* mvn release:perform (possibly with -DuseReleaseProfile=false due to Javadoc doclint failures for now)
+* rake clean gem SKIP_SPECS=true and push the gem
 
 ## Support