Fixes formatting

Fixed formatting and header levels
Fix an obvious typo
Merge pull request #33 from skinp/fix_typo

Fix an obvious typo
added a misc idea
Spell check
Merge pull request #34 from rothgar/master

Added an idea and fixed spelling in README.md
Changed action: to module: syntax

find . -type f -print0 -iregex '.*\(yml\)' | xargs -0 sed -i -r 's/^([ \t]+)(action:\s)(\w+)/\1\3:/g'
Merge pull request #36 from rothgar/master

Changed action: to module: syntax
Add a Bitdeli badge to README
Merge pull request #39 from bitdeli-chef/master

Add a Bitdeli Badge to README
Add guidance about existing Vagrantfile.

See issue #37
Add hint about checking firewall settings.

This hit me and costed me approx. one hour :-(
Add link to example server.

This eases following the tutorial.
Fix typo.
Fix typo.
Solve a todo by pointing to next step (where it is solved).

See issue #41.
Cleanup useless markup.
Merge pull request #40 from htgoebel/master

Add guidance about existing Vagrantfile.
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