Hi,
Tonight I finished the first release of a ruby gem that integrates Polymer with the Rails asset pipeline. Essentially, it allows you to specify what web components you want to import, and then automatically generates html import tags for those and any of their dependencies. Also, it inlines any external css or javascript references.
Finally, in production, it concatenates all of the imports into one big import, and removes any html/js/css comments and blank lines.
So pretty much what Vulcanize does, except for Rails.
It doesn't install Polymer or any components for you, so you need to
1. Download and include platform.js
2. Install any web components you want to use (usually into /vendor/assets/elements)
3. Use assets/elements/application.html just like you would to include javascript files, and you're in business.
If anyone takes a look it or uses it, and has any comments or critiques, let me know. I welcome contributions. Feel free to ask questions or give me feedback here, too.