```ruby
Pod::Spec.new do |s|
  s.name         = "HTHorizontalSelectionList"
  s.version      = "0.3.2"
  s.summary      = "A simple, horizontally-scrolling list of buttons."

  s.description  = <<-DESC
                   A simple, horizontally-scrolling list of buttons that can be used as a more flexible replacement for UISegmentedControl.
                   DESC

  s.homepage     = "https://github.com/hightower/HTHorizontalSelectionList"
  s.license      = { :type => "MIT", :file => "LICENSE" }

  s.author             = { "Erik Ackermann" => "erik@gethightower.com" }
  s.social_media_url   = "http://twitter.com/erikwithfriends"

  s.platform     = :ios, "7.0"

  s.source       = { :git => "https://github.com/hightower/HTHorizontalSelectionList.git", :tag => "0.3.2" }
  s.source_files  = 'HTHorizontalSelectionList'
  s.requires_arc = true
  s.frameworks        = 'Foundation', 'UIKit'

end
```

Update podspec to include subfolders of source code.
user
```ruby
Pod::Spec.new do |s|
  s.name         = "HTHorizontalSelectionList"
  s.version      = "0.3.2"
  s.summary      = "A simple, horizontally-scrolling list of buttons."

  s.description  = <<-DESC
                   A simple, horizontally-scrolling list of buttons that can be used as a more flexible replacement for UISegmentedControl.
                   DESC

  s.homepage     = "https://github.com/hightower/HTHorizontalSelectionList"
  s.license      = { :type => "MIT", :file => "LICENSE" }

  s.author             = { "Erik Ackermann" => "erik@gethightower.com" }
  s.social_media_url   = "http://twitter.com/erikwithfriends"

  s.platform     = :ios, "7.0"

  s.source       = { :git => "https://github.com/hightower/HTHorizontalSelectionList.git", :tag => "0.3.2" }
  s.source_files  = 'HTHorizontalSelectionList/**/*.{h,m}'
  s.requires_arc = true
  s.frameworks        = 'Foundation', 'UIKit'

end
```
assistant