fix progressbar in docker push
Remove old debug from tarsum
Make sure the cache lookup returns always the same result
Log files name along with their checksum in TarSum + add a Method to retrieve the checksum map
Change BuildFile in order to use TarSum instead of custom checksum
Hash the sums for directory (ureadable when there is too many
simplify the volumes documentation and mention more details
Update for Ubuntu 13.10

With two additional commands, this procedure will work for Ubuntu 13.10 using the image stackbrew/ubuntu:13.10.

1) change /etc/pam.d/sshd, pam_loginuid line 'required' to 'optional'
2) echo LANG=\"en_US.UTF-8\" > /etc/default/locale
Mention lxc-checkconfig

This is important because the list below is not complete when one build one's own kernel.  Plus it is more robust in the face of changes.
Implement suggestions
Merge pull request #3287 from vieux/fix_progressbar_display_push

fix progressbar in docker push
Merge pull request #3353 from creack/improve_add_cache

Improve add cache
Merge pull request #3399 from rgstephens/patch-1

Update for Ubuntu 13.10
Keep original transcript in Thatcher's voice

and clarify that this is an update to the example.
Merge pull request #3409 from Chris00/patch-1

Mention lxc-checkconfig
Added some 1.7 API updates that were missing from 1.8
Merge pull request #3389 from SvenDowideit/3366-simplify-volumes-documentation

simplify the volumes documentation and mention more details
Merge pull request #3428 from jamtur01/port1.8

Added some 1.7 API updates that were missing from 1.8
Fixed duplicate here references in FAQ
Merge pull request #3437 from jamtur01/faqhere

Fixed duplicate here references in FAQ