[FEATURE string-parameterize]

This feature transforms strings so they can be used for 'pretty' / SEO friendly urls.
With the router at the heart of ember, this becomes indispensable in most apps.

Similar to [ActiveSupport's String parameterize](http://api.rubyonrails.org/classes/ActiveSupport/Inflector.html#method-i-parameterize)

Example:
``` javascript
'Core Team Meeting Minutes - 2013/12/06'.parameterize(); // => 'core-team-meeting-minutes-2013-12-06'
```