message: use ruby api to retrieve spec details
  this is much faster than reaching out to the command line util, which has to spawn a new ruby process for each podspec.
diff: @@ -49,8 +49,8 @@ podspec = Pod::Spec.new do |s|
  'node_modules/react-native/third-party-podspecs/glog.podspec'
  ]
  podspecs.each do |podspec_path|
  - podspec_json = JSON.parse(`pod ipc spec #{podspec_path}`)
  - s.dependency podspec_json['name'], podspec_json['version']
  + spec = Pod::Specification.from_file podspec_path
  + s.dependency spec.name, "#{spec.version}"
  end
  s.dependency 'SDWebImage', '>= 3.7.2', '< 4'
  