Added pics to containers rag-bag.
These are whiteboard shots; we may never revisit them, but it was thinking at the time.
Move .gitignore to specs -- thus sharing it with cgroups and container
Adjust line in README.md
Merge commit 'dce09451e5ce73821983683a0bd726ae411ed310'

* commit 'dce09451e5ce73821983683a0bd726ae411ed310':
  Some typographical fixes, and added two notes about the zero subsystem case.
  Move .gitignore to specs -- thus sharing it with cgroups and container
ip spec