Update Seahorse README

Author: valentinmadrid

oracles/pyth/seahorse/README.md

@@ -1,5 +1,13 @@
-# seahorse
+## Using Seahorse with Pyth
+
+Make sure to import the Pyth module for Seahorse. 
+
+`from seahorse.pyth import *` 
+
+You have to validate a price feed's ID for security reasons, if you want to read the SOL/USD price feed, you can verify the account in the context like this:
+
+`price_account.validate_price_feed("SOL/USD")`
+
+For more information, visit the [Seahorse documentation on Pyth](https://seahorse-lang.org/docs/pyth).
 
-This project was created by Seahorse 0.2.7.
 
-To get started, just add your code to **programs_py/seahorse.py** and run `seahorse build`.