move hosts to hosts.example

  - move hosts file
  - add gitignore for hosts
  - this modification will allow admins to add their own hosts
    without worrying about accidentally uploading them to
    external servers.
Update README.md
Merge pull request #32 from thefury/hosts-to-example

Move hosts to hosts.example
prevent non-existent file from breaking play

fixes:
failed: [127.0.0.1] => {"failed": true, "item": "", "rc": 257}
msg: Destination /etc/sysconfig/iptables does not exist !

create=yes allows it to not fail on non-existent file, but because regex={{ httpd_port }} doesn't match anything, nothing is done (no file is created)
Merge pull request #33 from truedays/patch-1

prevent non-existent file from breaking play
Merge pull request #2 from ansible/master

Update fork