Add building instructions. See JSPF-34
Add building instructions. See JSPF-34

git-svn-id: 00f83033766efed07e2b0af284f6d6b8c92b3c53@454319 13f79535-47bb-0310-9956-ffa450edef68

chibenwa/james-jspf,aduprat/james-jspf,mbaechler/james-jspf,tools4origins/james-jspf,apache/james-jspf,linagora/james-jspf