Quick app to run a vault server in a heroku dyno
brew install vault vault-cli jq
export VAULT_APP=<APP NAME YOU PICKED>
export VAULT_ADDR="https://${VAULT_APP}.herokuapp.com"
vault init #### stash the output of this command in a safe place!
vault unseal # do this step 3x with different keys
vault status
export VAULT_TOKEN=<ROOT TOKEN FROM INIT>
vault write secret/hello value=world
vault read secret/hello