[iOS] Update Swift QS for Xcode Beta-6
Merge pull request #368 from phvannor/XCode-Beta-6

[iOS] Update Swift QS for Xcode Beta-6
Merge branch 'master' into dev
[iOS] Update Swift QS for Xcode Beta-7
Merge pull request #381 from nnasaki/dev

[iOS] Update Swift QS for Xcode Beta-7