Add Shamir notebook to PryVote README

Author: TTitcombe

projects/pryvote/README.md

@@ -15,7 +15,28 @@ The project is in early development.
 
 ## Examples
 
-#### [Secure Multi-Party Voting](./demo/secure_multi_party_voting.ipynb)
+#### [Secure Multi-Party Voting](./demo/1_secure_multi_party_voting.ipynb)
 
 POC of secure multi-party voting.
-No credential verification/SSI in place at the moment.
+Each vote is encrypted and split
+between multiple vote counters.
+At the end of voting,
+the vote counters combine
+their encrypted shares
+to reveal the aggregate result.
+
+**No credential verification/SSI in place at the moment.**
+
+#### [Shamir Secret Sharing](./demo/2_shamir_secret_sharing_voting.ipynb)
+
+The Shamir Secret Sharing protocol
+is similar to SMPV,
+however only a subset of vote counters
+are required for the aggregate result
+to be decrypted.
+Therefore,
+this protocol is somewhat robust
+to malicious
+vote counters.
+
+**No credential verification/SSI in place at the moment.**