I've fixed these issues locally but will submit a PR soon. More changes will probably be needed for Swift 3.
iOS/Pods/ParkedTextField/ParkedTextField/ParkedTextField/ParkedTextField.swift:214:35: value of optional type 'UIFontDescriptor?' not unwrapped; did you mean to use '!' or '?'?
return UIFont(descriptor: descriptor, size: 0)
I've fixed these issues locally but will submit a PR soon. More changes will probably be needed for Swift 3.