Insertion points with select

Check it out, @shailen and @Sfshaza.

Staged at:
https://github.com/dart-lang/polymer-dart-snippets/tree/insertion_points_with_select/web/insertion_points/creating_insertion_points_using_the_select_attribute#creating-insertion-points-using-the-select-attribute
Yeah, I'm not sure. I do want easy links to each file, though, and those links seem a little naked without a writeup.

In other words, having a short description (which would be the same for all samples unless there's really something different about the file in that sample) doesn't seem like a problem to me.