docs: provide instructions for building for iOS using Xcode 10 (#1377)
docs: provide instructions for building for iOS using Xcode 10 (#1377)

* docs: provide instructions for building for iOS using Xcode 10

* docs: Make the commands for clearing react native cache clearer to read & easier to copy

newsuk/times-components,newsuk/times-components,newsuk/times-components,newsuk/times-components,newsuk/times-components