Updating readme with Maven Central deployment information

git-svn-id: http://scmcit.gva.es/svn/gvnix/trunk/code@2741 69435866-3869-0410-973d-9f951a852354
Updating roo scripts references on build.sh

git-svn-id: http://scmcit.gva.es/svn/gvnix/trunk/code@2742 69435866-3869-0410-973d-9f951a852354