Minify famous styles into one file

# famous.css minified on build
This change will allow the famous css of the default to be minified
We would also have the ability to add css based on what we are adding to our app in the future.  It would concatenate automatically into the famous.css.
```HTML
<!-- build:css(app/) css/famous.css -->
    <link rel="stylesheet" type="text/css" href="lib/famous/core/famous.css" />
    <link rel="stylesheet" type="text/css" href="lib/famous/widgets/newwidgets.css" />
 <!-- endbuild -->
```
 Note: The copies of the css are really not needed with this structure in the dist now. Hence the removal of the css copy from the library.