This avoids passing the plaintext raw password into the script as a
command-line argument, which shells such as bash and zsh will
typically log into a file like ~/bash_history.

As a small bonus, this works a LOT more smoothly if the user's
password has characters in it that either the shell or Python syntax
might like to interpret as metacharacters, like '\' or '"'.

getpass.getpass() is part of Python's standard library in all versions
between 2.4 and 3.3 at least.

Change user mailing list link to ansible-project from ansible-devel

rules are avaialble at https://en.wikipedia.org/wiki/Wikipedia:AutoWikiBrowser/Typos

- correct spelling

Link to guru page was not rendering correctly on http://docs.ansible.com/faq.html.
Link to readme returned 404.

Also note AWX is named "Tower" now, as we found that simpler.

- Update FAQ entry to refer to docsite README and reduce redundancy.

- Add additional info to docsite README: Sphinx building, link to module
  documentation reference.