Add CHANGELOG entry for #1549.
Include robots.txt and crossdomain.xml.
Merge pull request #1550 from rwjblue/html5-boilerplate

Include robots.txt and crossdomain.xml.
[WIP] es6 namespaced addons

This will allow one to have modules in their addons that are namespaced
under their addon's name rather than the application's namespace.
Expects the following directory structures:

addon
└── mixins
    └── data-route.js
app
└── controllers
    └── people.js
Any modules in app/ will always be namespaced under whatever namespace
the parent application has. This allows the addon developer to create
common-sense defaults that get pulled into the application then can be
overridden by the consuming developer in the parent project's app/
directory.

Any modules in addon/ will always be namespaced under the addon's name.
This name is always forced to lower-cased & hyphenated. So:

"Ember CLI Some Addon" => "ember-cli-some-addon"
Then in whichever modules the consuming developer wants to use this
module they can do:

import DataRouteMixin from "ember-cli-some-addon/mixins/data-route";
This feature will traverse the addon/ directory and build a list of
modules from the available file names and merge this into
app.importWhitelist after the addon's modules have been compiled to ES6.

This feature will compile the addon's assets into vendor.js and
vendor.css. It does this by expecting the addon to compile its own
assets into a single file then all addon's files are concat'ed into an
addon.js then eventually concat'ed into vendor.js.

The EmberApp's registry is no passed into all preprocessors. This allows
the Addon to manage its own registry rather than rely on the private singleton.
Merge pull request #1544 from bcardarella/bc-namespaced-addons

[WIP] es6 namespaced addons
Fixing bug with nesting multiple levels
Merge pull request #1551 from kimroen/generator-fixing-nesting

Fixing bug with nesting multiple levels
Move bower assets to bower_components
Merge pull request #1436 from jakecraige/patch-3

Split bower_components into it's own directory
Make history-support an addon.

* Makes history-support just a standard middleware addon.
* Moves serve-files into a single file (as less logic is being done
  now).
* Removes connect-chain (it is not needed).
Merge pull request #1552 from rwjblue/make-history-support-an-addon

Make history-support an addon.
Don't assume value of bowerrc directory
Merge pull request #1553 from bcardarella/bc-dont-assume-bowerrc-directory

Don't assume bowerrc.directory value
Updated CHANGELOG for #1544
Merge pull request #1556 from bcardarella/bc-changelog-namespaced-addons

Updated CHANGELOG for #1544
Removed use of `memoize` in EmberApp. Allows multiple EmberApps to be instantiated.
Merge pull request #1559 from Batterii/remove-memorize

Removed use of `memoize` in EmberApp. Allows multiple EmberApps to be instantiated.
Testing appveyor.yml
Update README.md
Merge pull request #1563 from WMeldon/windows-ci

Added appveyor.yml for Windows CI