Modernise example of building home directory URL
Auth is more akin to NSURLSession these days
+URLWithPath:isDirectory:hostURL: takes full care of manipulating URL for us
ConnectionKit itself no longer needs to link against libssh2
Remove "Strip UKKQueue" build phase

We stopped inculding UKKQueue quite a while ago!
Rely on CURLHandle to bundle its own version on libssh2, libcrypto & libssl
Merge commit '5728133fa67b37d32f103ca52d7302520e37ea89' into uploader-urls