fix test leaving changed file behind
Merge pull request #1330 from jakecraige/fix_test_changed_file

fix test leaving changed file
Ember apps can now be relative in any directory

In your Brocfile's EmberApp definition you would declare an alternate
root path:

```js
var app = new EmberApp({
  root: path.join(process.cwd(), 'tests/dummy')
});
```
Merge pull request #1338 from bcardarella/bc-relative-apps

Ember apps can now be relative in any directory
Update broccoli-es3-safe-recast.
Merge pull request #1340 from rjackson/update-es3-safe-recast

Update broccoli-es3-safe-recast.
EmberApp can take jshintrc path options
Merge pull request #1341 from bcardarella/bc-jshintrc-options

EmberApp can take jshintrc path options
Remove broccoli-replace in favor of broccoli-string-replace.

`broccoli-replace` brings a significant number of dependencies
(including `js2coffee` and `coffee-script`). This represents 15% of the
total `node_modules/` size of `ember-cli`.

`broccoli-string-replace` depends on `broccoli-filter` only, and
lets `String.prototype.replace` do all of the hard work.

```
% du -csh node_modules/broccoli-replace
 20M    node_modules/broccoli-replace
 20M    total
```

```
% du -csh node_modules/broccoli-string-replace
388K    node_modules/broccoli-string-replace
388K    total
```
Merge pull request #1345 from rjackson/remove-broccoli-replace

Remove broccoli-replace in favor of broccoli-string-replace.
Fix typo
Merge pull request #1349 from James1x0/master

Fix typo in README.md
Allow custom commands to be accessed in blueprints
Single/doubl quotes
Remove Grunt.
Merge pull request #1354 from rjackson/remove-grunt

Remove Grunt from devDependencies.
Update .travis.yml
fixes the express not define error
fixes the tests errors
Update broccoli-sass to support sass files