Update README.md

Author: peterli-r3

Tokens/README.md

@@ -16,3 +16,6 @@ This CorDapp aims to demonstrate the usage of TokenSDK, especially the concept o
 
 ### [spaceships-javaAPIs](./spaceships-javaAPIs):
 This CorDapp contains examples using new [Java APIs](https://medium.com/corda/corda-tokens-made-easy-with-new-java-apis-83095693d72) introduced in Token SDK 1.2 - It makes of use of utility functions and the new Java Token Builders. The lastes Java APIs were indeed later implmented for all of the samples above as well. 
+
+### [token to friend](./tokentofriend):
+This CorDapp showcase a simple token issuance use case. You can attach a secret message with the token and your friend can retrive it with the credential that you inputed when creating the token. This cordapp come with a nice looking front end using Reactjs. Feel free to give a try on the app!