Jl comment help

Some improvements/things left:
- ui feedback is currently un-animated. Might be worth adding some kind of animation if you're interested.
- need some way to get current user's name to add to the comment (see my note in the javascript controller)
This can be done on the backend right?
```ruby
def create
    current_user.comments.create(params.permit(:text, :bread_id))
    render nothing: true  
  end
```