Thanks for reviewing! Async approach could be better, for some cases, but I have chosen synchronous approach for simplicity (or even to be close to other imple

Thanks for reviewing! Async approach could be better, for some cases, but I have chosen synchronous approach for simplicity (or even to be close to other implementations). Only WS to be used now, but I'll add other http libraries support(I think about Apache HttpClient) to avoid lock on PlayFramework (in case of using Play, WS is awesome). It's easy to implement other options though(you need to implement HttpApiClient trait functions).