Remove obsolete .mounted_as, update README

README.md

@@ -171,10 +171,10 @@ By default, Passwordless uses the resource name given to `passwordless_for` to g
 
 ```ruby
 passwordless_for :users
- # <%= users.sign_in_path %> # => /users/sign_in
+ # <%= users_sign_in_path %> # => /users/sign_in
 
 passwordless_for :users, at: '/', as: :auth
- # <%= auth.sign_in_path %> # => /sign_in
+ # <%= auth_sign_in_path %> # => /sign_in
 ```
 
 Also be sure to [specify ActionMailer's `default_url_options.host`](http:https://guides.rubyonrails.org/action_mailer_basics.html#generating-urls-in-action-mailer-views).
@@ -204,13 +204,13 @@ Currently there is not an officially supported way to generate your own magic li
 However, you can accomplish this with the following snippet of code.
 
 ```ruby
-session = Passwordless::Session.new({
+session = Passwordless::Session.create!({
  authenticatable: @manager,
  user_agent: 'Command Line',
  remote_addr: 'unknown',
 })
-session.save!
-@magic_link = send(Passwordless.mounted_as).token_sign_in_url(session.token)
+
+@magic_link = users_token_sign_in_url(session.token)
 ```
 
 You can further customize this URL by specifying the destination path to be redirected to after the user has logged in. You can do this by adding the `destination_path` query parameter to the end of the URL. For example

lib/passwordless.rb

@@ -17,7 +17,6 @@ def self.digest(token)
  mattr_accessor(:token_generator) { UrlSafeBase64Generator.new }
  mattr_accessor(:restrict_token_reuse) { false }
  mattr_accessor(:redirect_back_after_sign_in) { true }
- mattr_accessor(:mounted_as) { :configured_when_mounting_passwordless }
 
  mattr_accessor(:expires_at) { lambda { 1.year.from_now } }
  mattr_accessor(:timeout_at) { lambda { 1.hour.from_now } }