Create bower.json for prod

[jjb]

And another one for the prod branch

alas, there is no way to register a package with bower and point it at a branch. but users can still do this:

asset "elementQuery", github: "tysonmatanich/elementQuery#prod"

or this

{
  "dependencies": {
    "elementQuery": "git://github.com/tysonmatanich/elementQuery#prod"
  }
}