Changed settings config to object style. Do time calculation for expires...

New config style:
```javascript
        fingerprintOptions    : {
          cookieKey           : 'appHeroID',
          toSetCookie         : true,
          onlyStaticElements  : false,
          settings            : {
            path              : '/',
            expires           : 86400000
          }
        }
```
Expires in ms, correct date (UTC) will be calculated automatically. Old version doesn't work correctly, because config is only read once.