updated readme

README.md

@@ -1,2 +1,29 @@
 # balance-transfer-vault
 fork of https://github.com/hyperledger/fabric-samples/tree/release-1.4/balance-transfer with implimentation of hashicorp' vault
+
+if you are getting error as 
+Some Times you may get error ```Error: Status 404``` even in setting values. just open another terminal tab/window run:
+
+```
+export VAULT_TOKEN=<TOKEN> 
+export VAULT_ADDRESS='http(s)://<HOST>:<PORT>'
+````
+
+Then run the following command:
+
+```
+vault secrets disable secret
+vault secrets enable -version=1 -path=secret kv
+```
+
+This example requuires to vault instanses. Assuming vault is already installed
+
+to run multiple instanses
+run :
+```
+vault server -dev
+```
+and in a separate tab 
+```
+vault server -dev -dev-listen-address=127.0.0.1:8300
+```