don't mark log_directory or log_file_mode as comments
don't comment out synchronous_commit, checkpoint_timeout, checkpoint_completion_target
Merge pull request #94 from seamusabshere/patch-1

uncomment various important settings
add contribution from @seamusabshere to the README
Setting empty password causes exception. This change allows a password to be left unset.
add contribution from @RichardWigley to the README
Merge pull request #95 from phlipper/empty-passwords

Setting empty password causes exception... #93
Fix import repo key 404
update README to match attribute file changes
add contribution from @phumpal to the README
Merge pull request #96 from phlipper/update-key-url

apt_key location has changed #92
allow controlling how to restart postgres
implements phlipper/chef-postgresql#83
rubo cop complains and never restart for commands which do not need it
fix up tests
include readme documentation on how to use cfg_update_action
explicitly approve instance of FC037 "violation"
add contribution from @mjallday to the README