Fix grammar in password
Documents the --step and --start-at options to ansible-playbook. Fixes #9041.
adding for loop on list to to handle the return of none when the list is empty. With the previous method if the list was empty the script died. See http://stackoverflow.com/questions/18852324/typeerror-sequence-item-0-expected-string-nonetype-found
Google: allow for different libcloud provider to support upcoming DNS module
Fix note about video length

Perhaps due to update mentioned at /resources page, the video is 34
minutes long.
Merge pull request #9495 from AloisMahdal/longer_vid

Fix note about video length
Adding v2 task/block iterator and some reorganizing
Support new AWS regions: cn-north-1, eu-central-1.
Fixed 404-link for Michael DeHaan profile page.
Merge pull request #9522 from rndmh3ro/patch-1

Fixed 404-link for Michael DeHaan profile page.
Delete import json. Several syntax changes.

Import json called twice. In first it will call an exception, if json
module not installed.
Merge pull request #9527 from UnderGreen/devel

Delete import json. Several syntax changes.
Support nested modules with ANSIBLE_LIBRARY env var
Mention change to fetch module's output
Better way to get the python_interpreter inventory variable
Support RackConnect v3 by allowing a network to be specified for use in determining ansible_ssh_host
Add support for reading from a config file
Support boot from volume discovery
Support fallbacks for access network and access ip version
Expand tilde in path names