Fix README description of User.status.values

[MichaelHoste]

User.status.values doesn't seem to return "I18n text values" as mentioned in the README, but just "values".

class User < ApplicationRecord
  extend Enumerize

  enumerize :status, in: [:student, :employed, :retired]
end

with:

en:
  enumerize:
    user:
      status:
        student: "Student"
        employed: "Employed"
        retired: "Retiree"

User.status.values will return ["student", "employed", "retired] and not ["Student", "Employed", "Retiree].

Or maybe I'm missing something?