Don't pod install with asset_audio_player_plus

[tksvn-tannv]

I checked and found that the pobspec file and the name content inside have not changed to the new package name. No podspec found for assets_audio_player_plus in .symlinks/plugins/assets_audio_player_plus/ios

Pod::Spec.new do |s|
  s.name             = 'assets_audio_player'
  s.version          = '0.0.1'
  s.summary          = 'A new flutter plugin project.'
  s.description      = <<-DESC
  s.swift_version    = '4.2'
  s.swift_versions   = ['4.0', '4.2', '5.0']
A new flutter plugin project.
                       DESC
  s.homepage         = 'http://example.com'
  s.license          = { :file => '../LICENSE' }
  s.author           = { 'Your Company' => '[email protected]' }
  s.source           = { :path => '.' }
  s.source_files = 'Classes/**/*'
  s.public_header_files = 'Classes/**/*.h'
  s.dependency 'Flutter'

  s.ios.deployment_target = '8.0'
end