Newly designed API defines Ancestry as a set of layers
and shrinked the api to only the most used apis:
post ancestry, get layer, get notification, delete notification
Fixes#98
When opening the URL in the browser the section about "Connection Strings" is directly displayed. This way there's no need to scroll to it. (Also use HTTPS)
Clair will now use a YAML configuration file instead of command line
arguments as the number of parameters grows.
Also, Clair now exposes a Boot() func that allows everyone to easily
create their own project and load dynamically their own fetchers/updaters.
