[SourceKitten] Print a friendly error when unable to find an Xcode for the given swift version
[SourceKitten] Print a friendly error when unable to find an Xcode for the given swift version

Kapeli/jazzy,Kapeli/jazzy,agentk/jazzy,agentk/jazzy,realm/jazzy,realm/jazzy,1ec5/jazzy,jeeftor/jazzy,Kapeli/jazzy,jeeftor/jazzy,agentk/jazzy,pcantrell/jazzy,1ec5/jazzy,1ec5/jazzy,PSPDFKit-labs/jazzy,pcantrell/jazzy,jeeftor/jazzy,PSPDFKit-labs/jazzy,pcantrell/jazzy