Added support webpack

[SuperPaintman]

Hi!
I added exports from module and import angular library from CommonJS / AMD.

const angular = require('angular');
const ngInfiniteScroll = require('ng-infinite-scroll');

angular.module('App', [
  ngInfiniteScroll // <- exports string with module name
])

[graingert]

missing new line

[graingert]

traditionally you do something like:

const MODULE_NAME = 'infinite-scroll';
angular.module(MODULE_NAME).directive(...).component(...); // etc...
return MODULE_NAME;

[SuperPaintman]

@graingert done

[graingert]

closing in favour of #271