configuration uses browser config not build config

[stefanpenner]

config/environment.js is intended to configure you running application, and ember-cli-build.js is to configure your apps build.

I believe the configuration ember-d3 uses should be via ember-cli-build.js not config/environment.js

An example of the ember-cli-build.js would be

module.exports = function(defaults) {
  return new EmberApp(defaults, {
    'ember-d3': { bundle : true }
  });
}