Standard exceptions replaced non standard exceptions. [skip ci]

Author: ronniebermejo

README.md

@@ -654,9 +654,9 @@ open_pay_resource.delete_all(customer_id=nil)
 
 This API generates 3 different Exception classes.
 
--  **OpenpayException**: Generic base api exception class, for generic api exceptions.
+-  **OpenpayException**: Generic base API exception class, Generic API exceptions.
 
-     - Internal server error (500 Internal Server Error)
+     - Internal server error (500 Internal Server Error).
      - OpenpayApi factory method, invalid resource name.
 
     Examples:

lib/openpay/customers.rb

@@ -154,7 +154,7 @@ def update_subscription(subscription, customer, params)
 
   def delete_all_subscriptions(customer_id)
     if env == :production
-      raise OpenPayError ('This method is not supported on PRODUCTION')
+      raise OpenpayException.new('This method is not supported on PRODUCTION', false)
     end
     all_subscriptions(customer_id).each do |sub|
       delete_subscription(customer_id, sub['id'])
@@ -176,7 +176,7 @@ def delete_card(customer, card_id)
 
   def delete_all_cards(customer_id)
     if env == :production
-      raise OpenPayError ('This method is not supported on PRODUCTION')
+      raise OpenpayException.new('This method is not supported on PRODUCTION', false)
     end
     each_card(customer_id) do |card|
       delete_card(customer_id, card['id'])