[wip] Writing step-13

Added first part of README
Added sshd role
Merge branch 'master' into writing

* master:
  Added more contribution info and IDEAS.md
[wip] adds step-13 about iptables

Adding step-13
Fixed step-11 withespace
Added socat install in haproxy role in step-12
Fixes formatting

Fixed formatting and header levels
Update README.md

To supress the cowsay ANSIBLE_NOCOWS="1", instead of 0
Merge pull request #38 from atillamas/patch-1

Update README.md
TOC and cosmetic fixes

Fixed entries in TOC (iptables chapter needs a split)
Reformatted inline playbooks for better readability.
Merge branch 'writing' of github.com:leucos/ansible-tuto into writing

* 'writing' of github.com:leucos/ansible-tuto:
  Update README.md
Fixes merge conflicts
Merge branch 'master' into writing

* master:
  Adds a list of contributors
Merge branch 'master' into writing

* master:
  Grammatical improvements.
  Remove useless "fake task to gather facts".

Conflicts:
	step-11/README.md
Introduces facts more smoothly

Facts were presented with 'More facts' but weren't mentionned before.
Fixes #52
Fixes duplicated stat socket in README.md

Fixed duplication in haproxy config shown in README.md
Fixes #42
Merge branch 'writing' of github.com:leucos/ansible-tuto into writing

* 'writing' of github.com:leucos/ansible-tuto:
  Fixes duplicated stat socket in README.md
  Introduces facts more smoothly
  TOC and cosmetic fixes
  Update README.md
  Fixes formatting
  [wip] adds step-13 about iptables
  [wip] Writing step-13
Removed chapter 13

Removed chapter about iptables
Fixes playbook output

Fixed playbook output
Added note about socat