Resources for building an HTML helpers ruby gems:
- http://rack.rubyforge.org/doc/classes/Rack/Utils.html
- http://api.rubyonrails.org/classes/ActionView/Helpers/AssetTagHelper.html
- http://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html
- http://api.rubyonrails.org/classes/ActionView/Helpers/TextHelper.html
- http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html
Don't forget about Bootstrap Components, it should be useful to have helpers for them: