Rename 'inventory.secret' directory to 'secret'

'debops.secret' role has changed how the secret directory is named. All
scripts and documentation is updated to reflect the changes.
Merge pull request #43 from drybjed/rename-inventory.secret-to-secret

Rename 'inventory.secret' directory to 'secret'
Add 'debops-defaults' script

This script can be used to more easily browse defaults in all or
selected roles.
Merge pull request #44 from drybjed/defaults

Add 'debops-defaults' script
Update README.md.j2 template
Add README.rst templates
Merge pull request #45 from drybjed/readme-updates

Update README templates
Fix errors in role README.rst template
Merge pull request #46 from drybjed/fix-readme-template

Fix errors in role README.rst template
Update base README.rst template for roles
Merge pull request #47 from drybjed/update-base-readme-template

Update base README.rst template for roles
Checking if lsb_release exists - for example in ARCH LINUX there is no lsb_release file
Merge pull request #50 from stricte/init_fix_for_command_not_found

Checking if lsb_release exists
Move documentation to new site, docs.debops.org
Merge pull request #51 from drybjed/remove-docs

Move documentation to new site, docs.debops.org
Add more block sections in README.rst template
Add default documentation template

This template was used to generate role documentation on
http://docs.debops.org/
Update CHANGELOG.md
Merge pull request #52 from drybjed/ansigenome-templates

Ansigenome templates
Change the way 'debops' script looks for playbooks

'debops' script interprets the first argument given on the command line
and tries to find a corresponding playbook, in order:

- check if given parameter is an existing file and use that as
  a playbook;
- check if given parameter is a <parameter>.yml file in
  'project/playbooks/' or 'project/ansible/playbooks/' directories and use
  that as a playbook;
- check if given parameter is a <parameter>.yml file debops-playbooks
  install directory and use that as a playbook.

If nothing has been found, 'debops' script will default to 'site.yml'
playbook in 'playbooks/', 'ansible/playbooks/' and finally
debops-playbooks install directory.