used named params in create payment method, fix README with Grammarly

README.md

@@ -15,7 +15,7 @@ Install the gem and add to the application's Gemfile by executing:
 bundle add "monopay-ruby"
 ```
 
-If bundler is not being used to manage dependencies, install the gem by executing:
+If bundler is not being used to manage dependencies, install the gem by executing the:
 
 ```ruby
 gem install "monopay-ruby"
@@ -46,7 +46,7 @@ Development: [https://api.monobank.ua/](https://api.monobank.ua/)
 
 Production: [https://fop.monobank.ua/](https://fop.monobank.ua/)
 
-Just get the token and go to earn moneys! 🚀
+Just get the token and go to earn money! 🚀
 
 
 _______________________________________________________________
@@ -58,14 +58,14 @@ You may add a minimum value to your payment:
 ```ruby
 # config/initializers/monopay-ruby.rb
 MonopayRuby.configure do |config|
-  config.min_value = 1
+  config.min_price = 1
 end
 ```
 * 0.01 UAH - it is a minimal valid value for Monobank:
   - if you use 1 as an Integer it is equal to 0.01 UAH
-  - if you use BigDeciamal(5) it's equal to 5 UAH
+  - if you use BigDecimal(1) it's equal to 1 UAH
 
-Default value is 1 (0.01 UAH)
+The default value is 1 (0.01 UAH)
 
 
 ### Generate payment request
@@ -82,7 +82,7 @@ class PaymentsController < ApplicationController
     )
 
     if payment.create(amount: 100, destination: "Payment description")
-      # your success code processing
+      # your successful code processing
     else
       # your error code processing
       # flash[:error] = payment.error_messages
@@ -103,7 +103,7 @@ class PaymentsController < ApplicationController
     )
 
     if payment.create(amount: 100, discount: 20, discount_is_fixed: true, destination: "Payment description")
-      # your success code processing
+      # your successful code processing
     else
       # your error code processing
       # flash[:error] = payment.error_messages
@@ -112,11 +112,11 @@ class PaymentsController < ApplicationController
 end
 ```
 
-Where:
+Options:
 - discount - is an number, which represents a % of discount if discount_is_fixed: false and an amount of discount if discount_is_fixed: true
-- discount_is_fixed - a Boolean which set type of discount:
-  - ```true``` if it's with fixed amount, for example a coupon
-  - ```false``` if you need a some percentage of discount
+- discount_is_fixed - a Boolean which sets the type of discount:
+  - ```true``` fixed amount of discount will be applied, for example a coupon
+  - ```false``` discount amount will be preceded by %.
 * can be Integer, Float or BigDecimal
 
 
@@ -131,7 +131,7 @@ class PaymentsController < ApplicationController
     webhook_validator = MonopayRuby::Webhooks::Validator.new(request)
 
     if webhook_validator.valid?
-      # your success code processing
+      # your successful code processing
     else
       # your error code processing
       # flash[:error] = webhook_validator.error_messages

lib/monopay-ruby/configuration.rb

@@ -1,8 +1,8 @@
 class MonopayRuby::Configuration
-  attr_accessor :api_token, :min_value
+  attr_accessor :api_token, :min_price
 
   def initialize
     @api_token = ENV["MONOBANK_API_TOKEN"]
-    @min_value = ENV["MIN_VALUE"] || 1
+    @min_price = ENV["MIN_PRICE"] || 1
   end
 end

lib/monopay-ruby/invoices/simple_invoice.rb

@@ -30,10 +30,10 @@ def initialize(redirect_url: nil, webhook_url: nil)
       # @param [String] destination - additional info about payment
       # @param [String] reference - bill number or other reference
       # @return [Boolean] true if invoice was created successfully, false otherwise
-      def create(amount, discount=nil, discount_is_fixed=false, destination: nil, reference: nil)
+      def create(amount, discount: nil, discount_is_fixed: false, destination: nil, reference: nil)
 
         begin
-          @min_amount = MonopayRuby::Services::ValidateValue.call(MonopayRuby.configuration.min_value, DEFAULT_CURRENCY, "Minimal amount")
+          @min_amount = MonopayRuby::Services::ValidateValue.call(MonopayRuby.configuration.min_price, DEFAULT_CURRENCY, "Minimal amount")
           @amount = MonopayRuby::Services::ValidateValue.call(amount, DEFAULT_CURRENCY)
 
           @destination = destination