Update README.md

Author: gcamp

README.md

@@ -1,3 +1,7 @@
+# Fares have been added to the MobilityData validator, you should use this instead
+### https://github.com/MobilityData/gtfs-validator
+
+--------------
 # gtfs-fares-v2-validator
 
 This is a tool to validate fares-v2 GTFS datasets.
@@ -47,4 +51,4 @@ Amount and currency on these two files have been replaced by the usage of fare p
 - `fare_leg_rules.txt`
   - `transfer_only`: specifies that a fare leg rule may only be used at the back-end of a transfer
 - `fare_transfer_rules.txt`
-  - `filter_fare_product_id`: a fare product necessary to have in order for a transfer to be valid. Does not encode the `cost` of a transfer, as `fare_product_id` does.
+  - `filter_fare_product_id`: a fare product necessary to have in order for a transfer to be valid. Does not encode the `cost` of a transfer, as `fare_product_id` does.