readme.md in 2fa-0.0.1 vs readme.md in 2fa-0.0.2

@@ -31,11 +31,11 @@
   helpers.no_tfa do
     helpers.require_tfa(phone_number: '[phone]', http_params: helpers.tfa_friendly_params(params), url: request.path)
   end
 
   helpers.if_tfa do
-    @example = example.new(example_params)
+    @example = Example.new(example_params)
 
     respond_to do |format|
       if @example.save
         format.html { redirect_to example_url(@example), notice: "example was successfully created." }
         format.json { render :show, status: :created, location: @example }
@@ -47,17 +47,13 @@
   end
 end
 ```
 This is just a default scaffolded controller but with tfa auth.
 
-This isn't perfect as in theory someone could pass a different unused tfa by inspecting the form, so to prevent this, you can take in a `|tfa|` argument from the helper to verify that the tfa has the correct phone number.
+This isn't perfect as in theory someone could pass a different unused tfa by inspecting the form, so to prevent this, you can pass a `expected_phone: ` argument to `no_tfa` or `if_tfa` to add that requirement.
 ```rb
-helpers.if_tfa do |tfa|
-  if tfa.phone == @user.phone
-    #...your code here
-  else
-    head 401
-  end 
+helpers.if_tfa(expected_phone: @user.phone) do
+  #...
 end
 ```
 
 ### Custom tfa check page
 To make a custom tfa check page, make the file `app/views/tfa/tfas/_show.html.erb`.