Redis + Colors APIs

Addresses https://github.com/Lordnibbler/colorpicker-server/issues/10

- [x] RESTful API implementation
  * api/v1/colors
- [x] Redis cache

```js
r.incr( 'nextid' , function( err, id ) {
  r.set( 'snippet:'+id, JSON.stringify( obj ), function() {
    var msg = 'The snippet has been saved at <a href="/'+id+'">'+req.headers.host+'/'+id+'</a>';
    res.respond( msg );
  } );
} );
```
- [ ] Implement Redis ORM
  * [NOHM Redis ORM](https://github.com/maritz/nohm)
  * [CaminteJS Cross-DB ORM](https://github.com/biggora/caminte)

- [x] Redis API `GET /api/v1/colors` intermittently returns less than all of the keys.
- [x] Fontawesome 4.1 upgrade
- [x] Delete UI feature for saved colors
- [x] Tests 
  - [x] models/savedColor.js
  - [x] views/savedColor.js
  - [x] views/savedColors.js