Cocoa podspec文件忽略依赖库

Question

我的iOS swift库有以下podspec文件：

Pod::Spec.new do |s|
  s.name         = "DialogView"
  s.version      = "0.1"
  s.summary      = "Highly customisable dialog (alert) view made in swift"
  s.homepage     = "https://github.com/manGoweb/DialogView"
  s.screenshots  = "https://raw.githubusercontent.com/manGoweb/DialogView/master/_orig/screenshot1.jpg"

  s.license      = { :type => "MIT", :file => "LICENCE" }
  s.author       = { "Ondrej Rafaj" => "developer@mangoweb.cz" }
  s.social_media_url   = "http://twitter.com/rafiki270"
  s.platform     = :ios
  s.ios.deployment_target = '8.1'
  s.source       = { :git => "https://github.com/manGoweb/DialogView.git", :tag => "0.1" }
  s.source_files = "Classes/*"
  s.dependency "SnapKit", "~> 0.19.1"
  s.requires_arc = true
end

无论我做什么，文件都不会编译（示例项目在Xcode中执行）。当我这样做时：

pod spec lint ./DialogView.podspec

我收到以下错误：

Last login: Mon Feb 29 10:04:47 on console
-bash: rbenv: command not found
MacBook-Pro:DialogView pro$ pod spec lint ./DialogView.podspec

 -> DialogView (0.1)
    - ERROR | [iOS] xcodebuild: Returned an unsuccessful exit code. You can use `--verbose` for more information.
    - ERROR | [iOS] xcodebuild:  DialogView/Classes/DialogView.swift:64:9: error: value of type 'DialogView' has no member 'snp_makeConstraints'
    - ERROR | [iOS] xcodebuild:  DialogView/Classes/DialogView.swift:77:14: error: value of type 'UIView' has no member 'snp_makeConstraints'
    - ERROR | [iOS] xcodebuild:  DialogView/Classes/DialogView.swift:99:28: error: value of type 'UILabel' has no member 'snp_makeConstraints'
    - ERROR | [iOS] xcodebuild:  DialogView/Classes/DialogView.swift:112:30: error: value of type 'UILabel' has no member 'snp_makeConstraints'
    - ERROR | [iOS] xcodebuild:  DialogView/Classes/DialogView.swift:127:17: error: value of type 'DialogButton' has no member 'snp_makeConstraints'
    - ERROR | [iOS] xcodebuild:  DialogView/Classes/DialogView.swift:270:14: error: value of type 'DialogCurtainView' has no member 'snp_makeConstraints'

Analyzed 1 podspec.

[!] The spec did not pass validation, due to 7 errors.

[!] Unable to read the license file `/private/var/folders/45/g7fzvx8j47q28sms19jm1kwh0000gn/T/CocoaPods/Lint/Pods/DialogView/LICENCE` for the spec `DialogView (0.1)`

[!] Unable to read the license file `/private/var/folders/45/g7fzvx8j47q28sms19jm1kwh0000gn/T/CocoaPods/Lint/Pods/DialogView/LICENCE` for the spec `DialogView (0.1)`

对此的任何帮助将不胜感激！