ignores

git-svn-id: svn+ssh://svn.r-forge.r-project.org/svnroot/lava/pkg/lava@893 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
much faster stacking with new mets::cluster.index. Examples updated
doc
Merge branch 'master' of github.com:kkholst/lava