Add headings to rake routes table

[steveklabnik]

Another "get some feedback on this idea" PR. Thanks @burtlo!

It's easy to forget what the order of things are in the routing table, especially if you're new. The HTML view has headings, but the console does not. They're a little different at the moment due to space, but I can change them to be as close to possible once we determine this is a good idea.

$ rake routes
  Prefix Verb   URI Pattern              Controller#Action
    foos GET    /foos(.:format)          foos#index
         POST   /foos(.:format)          foos#create
 new_foo GET    /foos/new(.:format)      foos#new
edit_foo GET    /foos/:id/edit(.:format) foos#edit
     foo GET    /foos/:id(.:format)      foos#show
         PATCH  /foos/:id(.:format)      foos#update
         PUT    /foos/:id(.:format)      foos#update
         DELETE /foos/:id(.:format)      foos#destroy

One other thing I'd like to implement, but haven't: test if we're running in a shell or not. If we're not, then we shouldn't print the headings. If you're writing scripts that rely on the output of the task, no headings is way better.

[achempion]

I think that it unnecessary info. If you type rake routes – you must know what command do

[ninkibah]

Generally I know exactly what my URL will be, so I'd love if you could sort the URI Pattern alphabetically. Especially in the HTML view.

[burtlo]

@achempion as I am often teaching people rails for the first time individuals learning the command are only helped by the presence of the column headers.

[steveklabnik]

🎊