Updated swift-tools-version to remove generate-xcodeproj warning

[blanu]

"swift package generate-xcodeproj" produces a warning because of the swift-tools-version setting.
(Xcode 10)

[oliveroneill]

The CI is failing because we need to update it to the xcode10 image. I'll look into that now.

[oliveroneill]

I've updated travis to Xcode 10 and now only the Code Quality check is failing. I'm not familiar with sonar-scanner. @Bouke is this expected? I don't believe this is caused by the swift-tools upgrade.

[Bouke]

Hi @blanu, thanks for reaching out to me. I've tried to reproduce the issue that you're describing, however I might need some help:

$ which swift
/usr/bin/swift
$ swift --version
Apple Swift version 4.2 (swiftlang-1000.11.37.1 clang-1000.11.45.1)
Target: x86_64-apple-darwin18.0.0
$ swift package generate-xcodeproj
generated: ./INI.xcodeproj

[Bouke]

Did you verify the warnings against the master branch as well? That has some changes to resolve the error you might be getting. I've pushed version 1.1.0, including these commits. That should resolve any problems I think.

[blanu]

This warning appeared when generating an Xcode project for a package which includes the INI package as a dependency.

The 1.1.0 release seems to have eliminated the warning. Thanks!