Update README.md

Author: peterli-r3

Advanced/README.md

@@ -1,19 +1,28 @@
-## samples-java/advanced-cordapps
+## Advanced Cordapp Samples 
 
 This folder features Advanced sample projects, each of them demonstrates a complex cordapp that uses multiple features of Corda.
 
-### [auction cordapp](./auction-cordapp):
+### [Auction Cordapp](./auction-cordapp):
 An blockchain application that leverages different features of Corda like [SchedulableState](https://docs.corda.net/docs/corda-os/event-scheduling.html#how-to-implement-scheduled-events), [StatePointer](https://docs.corda.net/docs/corda-os/api-states.html#state-pointers)
 and [OwnableState](https://docs.corda.net/docs/corda-os/api-states.html#ownablestate). It also demonstrates how to perform a DvP (Delivery vs Payment) transaction on Corda.  
-[<img src="../webIDE.png" height=25 />](https://ide.corda.net/?folder=/home/coder/samples-java/Advanced/auction-cordapp)
+<p align="center">
+  <img src="./auction-cordapp/snaps/setup.png" alt="Corda" width="600">
+</p>
 
-### [negotiation cordapp](./negotiation-cordapp):
+
+### [Negotiation Cordapp](./negotiation-cordapp):
 An application that depicts the businsess negotiation and communication process over a distributed ledger system.
 It consists of the proposing, negotiating, and settling a corda transaction.  
-[<img src="../webIDE.png" height=25 />](https://ide.corda.net/?folder=/home/coder/samples-java/Advanced/negotiation-cordapp)
 
-### [obligation cordapp](./obligation-cordapp):
+### [Obligation Cordapp](./obligation-cordapp):
 A simple i-owe-you application illustrates all of the steps of creating an obligation for a resource to change owners.  
-[<img src="../webIDE.png" height=25 />](https://ide.corda.net/?folder=/home/coder/samples-java/Advanced/obligation-cordapp)
 
+### [Secret Santa Cordapp](./secretsanta-cordapp):
+This is an imlementation of Secret Santa using Corda as a tool to store multiple game states.It has a material-ui frontend that lets users create and self-service their own secret santa games. The frontend is implemented in ReactJS and the backend is implemented with a Spring Boot server and some corda flows. It is also equipped with an external emailing package(sendgrid), which you can utilze and turn the app into a live app and send the secret santa assignments to your friends'
+emails.
 
+### [Snake and Ladder Game Cordapp](./snakesandladders-cordapp):
+This sample implements a simple Snakes And Ladder Game on Corda. This cordapp demonstrate the use of multiple features, including Corda Account Library and Oracle service.
+<p align="center">
+  <img src="./snakesandladders-cordapp/snaps/game.png" alt="Corda" width="500">
+</p>