message: README: Add NPM package commands
diff: @@ -22,7 +22,15 @@ npm install -g @graphprotocol/indexer-service --registry https://testnet.thegrap
  npm install -g @graphprotocol/indexer-agent --registry https://testnet.thegraph.com/npm-registry/
  ```
  -After that, they can be
  +After that, they can be run with the following commands:
  +
  +```sh
  +# Indexer service
  +graph-indexer-service ...
  +
  +# Indexer agent
  +graph-indexer-agent ...
  +```
  ## Running from source
  