* referer and the value (RefererLookup)
* contains all known info about this referer
*/
private Map<String,RefererLookup> loadReferers(InputStream referersYaml) throws CorruptYamlException {
Yaml yaml = new Yaml(new SafeConstructor());
Map<String,Map<String,Map>> rawReferers = (Map<String,Map<String,Map>>) yaml.load(referersYaml);
// This will store all of our referers
Map<String,RefererLookup> referers = new HashMap<String,RefererLookup>();