update document
Merge branch 'master' of https://github.com/shadim/cloudifysource.github.com
Merge branch 'master' of https://github.com/shadim/cloudifysource.github.com
Merge branch 'master' of https://github.com/shadim/cloudifysource.github.com
Merge branch 'master' of https://github.com/shadim/cloudifysource.github.com
add images