Documented how to change JRuby and JtestR versions from build.yaml
Documented how to change JRuby and JtestR versions from build.yaml


git-svn-id: f481de8ecb0d1e2ade8c586a5c716a32a1f3e8c1@698311 13f79535-47bb-0310-9956-ffa450edef68

assaf/buildr,stewi2/buildr,atoulme/buildr,liamchristopher/buildr,apache/buildr,ittayd/buildr,stewi2/buildr,assaf/buildr,liamchristopher/buildr,apache/buildr,assaf/buildr,jpcaruana/buildr,atoulme/buildr,jpcaruana/buildr,stewi2/buildr,ittayd/buildr,mariusk/buildr-kawa,liamchristopher/buildr,stewi2/buildr,apache/buildr,jpcaruana/buildr,mariusk/buildr-kawa,jpcaruana/buildr,apache/buildr,mariusk/buildr-kawa,ittayd/buildr,liamchristopher/buildr,atoulme/buildr