Fixing grammar in README
Removing travis badge, while it suffer from wrong ssl problems
Merge remote-tracking branch 'epam/master' into HEAD
Merge remote-tracking branch 'origin/Xcode_51_Warnings' into Double_Call_On_WS_Cancel
Fixing double invokation of failure block after cancel. #280
Merge pull request #283 from yuru-taustahuzau/Double_Call_On_WS_Cancel

Double call on canceling web call