Add price conversion

front-api/helpers.rb

@@ -2,4 +2,12 @@ class Helper
   def self.money(amount)
     sprintf('%.2f KM', amount.to_f)
   end
-end
+
+  def self.get_bam_to_euro_conversion_rate
+    RibicaConfig.BAM_TO_EURO_CONVERSION_RATE
+  end
+
+  def self.bam_to_euro(amount)
+    self.get_bam_to_euro_conversion_rate * amount
+  end
+end