[BUGFIX beta] Give precedence to routes with more static segments. Fixes #3573
Removed nullified duplicate entries in features.json
Merge pull request #3575 from xtian/static-segment-precedence

Give precedence to routes with more static segments. Fixes #3573
[BUGFIX beta] sync router.js

- Sync router.js
- Don't fire `error` actions on transitions that have already been
  aborted/redirected
- Closes #3162
Merge pull request #3658 from machty/routerjs-sync

[BUGFIX beta] sync router.js
Merge pull request #3660 from rjackson/update_features_documentation

[DOC beta] Reference the guide on Feature Flags.
Updated documentation for Ember.Object init method

No need to call ```this._super()``` when extending Ember.Object. Like it says in the "NOTE" :-)
Merge pull request #3666 from hkjorgensen/patch-1

Updated documentation for Ember.Object init method
Use local npm packages for defeatureify.

Update to the latest `ember-dev` which requires `defeatureify` and
`yuidocjs` to be installed locally (previously these were required to be
global).

Also, adds a `package.json` to make installing as simple as `npm install`.