.yarddog.conf now conforms to INI-like format

Example:

    [Client]
    token = a9sdcjhaqw93e8jc23jdf90as8dfv
    url = http://example.com/api/v1

    [Server]
    aws_key = AAANK0q23jfaiweu238n9asdmcn9q
    aws_secret_key = AE0c23a9sdcn34+a03jfoa380asSADFgeSDfergdfv4==

(created by mashing on the keyboard)