Package for publishing to bower

Hi Ben,

I'm a big fan of your blog. It has been one of the key resources for me in learning all kinds of cool JS stuff, especially angular. I am particularly interested in this project and want to use it in several of my own. I thought this little PR would encourage you to publish it to bower for even easier distribution. I took a few liberties like renaming the module, changing it to a factory instead of a value, and adding a bower.json file.

If all looks good, all you need to do is run `bower register angular-hashkey-copier git@github.com:bennadel/HashKeyCopier.git` (assuming you have bower installed) from the directory.

If you want to use a different name or don't want it to be a factory that returns the constructor, my feelings won't be hurt if you don't accept this, but PLEASE consider publishing to bower!

Cheers!
Andy Perlitch

p.s. being in one of your blog pictures is on my bucket list! :D