Add a main property to package.json

[sjkillen]

Useful for browserify requires.

[brandly]

over on this repo, we ended up adding an index.js for this purpose

should we follow that same approach here?

[sjkillen]

What does exporting a string do? Nevermind I understand now, that's probably more useful

[brandly]

the string would be the name of the module, so that you can do something like

var app = angular.module('myApp', [
  require('angular-adaptive-backgrounds')
])