Update install documentation to include httplib2

With v1.4.2 setup.py requires httplib2 for install
doc: fixed changelog format
Merge pull request #5350 from jlaska/fix_debian_builds

Fix debian builds by adding a missing ','
Merge pull request #5351 from resmo/fix/doc

doc: fixed changelog format
Merge pull request #5348 from lichesser/patch-1

Update install documentation to include httplib2
Add documentation example of using 'register' with a loop
Don't place (or higher) in the min_ansible_version
Merge pull request #5357 from sivel/no-or-higher

Do not place (or higher) in min_ansible_version
Allow for no role dependencies in role metadata
Default deps list in ansible-galaxy template to an empty list
Allow 'init' to create a role even if the directory exists

This patch allows 'init' to create a role even if the desired role directory
already exists.  The 'init' command will require the --force argument if the
desired directory contains any ROLE_FILES.