1.3.4, noncoffee version

This edemaine:file-collection package is just a compiled version of vsivsi:file-collection via CoffeeScript 1.12.7 (with a tiny var removal to expose FileCollection as an export), to avoid any CoffeeScript dependency.

The only difference is to use meteor add edemaine:file-collection (and meteor remove vsivsi:file-collection if necessary).