Add JAVA info to README

README.md

@@ -167,6 +167,9 @@ $ lukso install --agree-terms
 
 ### `start`
 
+`start` will automatically start clients selected during the installation process and connect them to the network.  
+Please note that Teku needs a JDK installed in order to operate - this can be installed during the client installation process.
+
 #### How to start the clients
 
 ```sh
@@ -444,6 +447,8 @@ List all imported keys from the validators keystore.
 
 Issue an exit for your validator keys that have set withdrawal credentials.
 
+Running this command will take you to interactive version of exit command implemented by the respective organisation (Running validator exit command while running Prysm consensus layer will take you to Prysm exit process etc.)
+
 > ETH1 withdrawal addresses are required for the exit to work. These are automatically generated by the [Wagyu Key-Gen Tool](https://github.com/lukso-network/tools-wagyu-key-gen). If you used BLS keys from the [Key Gen CLI](https://github.com/lukso-network/tools-key-gen-cli) without specifying a withdrawal address, please update your withdrawal address credentials first.
 
 **IMPORTANT:** The Validator exit is an **irreversible** action. Before exiting your validator you need make sure you are mindful of what the exit process carries with itself. #
@@ -461,7 +466,7 @@ sudo lukso validator exit
 # Exit validator keys with Prysm/Teku for Testnet
 sudo lukso validator exit --testnet
 
-# Exit a validator key with Lighthouse for Mainnet
+# Exit a validator key with Lighthouse for Mainnet - please note that you may issue an exit for only a single validator at a time
 sudo lukso validator exit --keystore "./mainnet-keystore/keystore-xxx.json"
 
 # Exit a validator key with Lighthouse for Testnet