add payment views, styling and its helper methods

app/helpers/payments_helper.rb

@@ -0,0 +1,13 @@
+module PaymentsHelper
+  def months
+    (1..12).collect{|n| ["#{n} - #{Date::MONTHNAMES[n]}", n]}
+  end
+
+  def years
+    (Date.current.year..Date.current.year + 15)
+  end
+
+  def card_types
+    [[['Visa', 'visa'], ['MasterCard', 'master'], ['Discover', 'discover'], ['American Express', 'american_express']]]
+  end
+end