Merge pull request #350 from ArkadiyTsoy/master

Update ROADWebService.md
#337 Auth provider should return cancelable protocol
#337 adding Javadoc style comments; updating docs; removing excessive test; updating RFConcurrentAuthenticationProvider
#337 typo fixed
Merge pull request #351 from AlexeyAfanasyev/master

#337 Auth provider should return cancelable protocol
iOS 8 fix bugs