Feature request: pass full selector to grid()?

[beep]

Right now, the grid function accepts a class name for its first argument:

@include grid(content);

, which applies a grid to anything with a .content class.

I think it’d be great if this argument could be a full CSS selector. So, for example, these would all be valid:

@include grid( ".content" );
@include grid( "#www-propublica-org .content" );
@include grid( "#www-propublica-org-IL .content" );

I think this, coupled with #11, could make for a nice bump in flexibility of how/when josef’s applied.