README.md in weak_parameters-0.0.7 vs README.md in weak_parameters-0.0.8

@@ -11,10 +11,13 @@
 # WeakParameters provides `validates` class method to define validations.
 class RecipesController < ApplicationController
   validates :create do
     string :name, required: true, except: ["charlie", "dave"]
     integer :type, only: 1..3
+    string :quantity do |value|
+      value =~ /\A\d+(?:\.\d+)g\z/
+    end
   end
 
   def create
     respond_with Recipe.create(params.slice(:name, :type))
   end
@@ -34,9 +37,10 @@
 => 400
 ```
 
 ### Available validators
 * array
+* float
 * hash
 * integer
 * string
 * boolean (= 0, 1, false, true)