update README

README.md

@@ -3,11 +3,12 @@
 * c3.large machines have 2 disks. one of them is mounted to / and the other one has to be supplied in the defaults
 * install ansible locally and edit the hosts.yaml file in the root location to point to your validator's IP address and the ssh parameters
 * basic command
+* make sure to create `hosts.yaml` file using the `hosts.example.yaml` as a guide
 ```
-ansible-playbook setup.yaml -i hosts.yaml -e id_path=test-id.json -e vote_path=test-vote.json
+ansible-playbook setup.yaml -i hosts.yaml -e id_path=./keys/validator-keypair.json -e vote_path=./keys/vote-account-keypair.json -e region=ny -e cluster=testnet -e rpc_address=https://api.testnet.solana.com
 ```
 
-* the above assumes that test-id.json and test-vote.json have been generated using solana-keygen and that the vote-account has already been created. the ansible playbook executes the vote-account command to see that test-vote.json actually exists and is associated with test-id.json. it will fail before starting the validator if that is not the case
+* The above assumes that validator-keypair.json and vote-account-keypair.json have been generated using solana-keygen and that the vote-account has already been created. The ansible playbook executes the vote-account command to see that vote-account-keypair.json actually exists and is associated with validator-keypair.json. It will fail before starting the validator if that is not the case.
 
 # defaults
 

hosts.example.yaml

@@ -2,4 +2,5 @@
 ansible_user=ubuntu
 
 [validators]
-validator ansible_host=0.0.0.0 ansible_user=ubuntu ansible_ssh_private_key_file=~/.ssh/id_rsa
+# ansible_host should be the IP of your validator
+validator ansible_host=172.1.0.1 ansible_user=ubuntu ansible_ssh_private_key_file=~/.ssh/id_rsa