Add support for bower.json files installed as hidden files by Bower

[SizeSeeker]

Some modules that I've installed using Bower include ".bower.json" files in their install bundle, rather than "bower.json". It looks like this breaks index.js on line 101, since "bower.json" is hard-coded as not hidden.

See for instance https://github.com/carhartl/jquery-cookie

[synthomat]

👍

It looks like some of the vendors include a bower.json (the non-hidden one) while others don't. Maybe the problem with inconsistency is there and not in this tool :-(