message: l2geth: update readme
diff: @@ -16,7 +16,7 @@ configuration will determine the mode of operation. The configuration flags
  can be configured using either environment variables or passed at runtime as
  flags.
  -A prebuilt Docker image is available at `ethereumoptimism/go-ethereum`.
  +A prebuilt Docker image is available at `ethereumoptimism/l2geth`.
  To compile the code, run:
  ```
  @@ -25,46 +25,39 @@ $ make geth
  ### Running a Sequencer
  -Running a sequencer requires the [Data Transport Layer](https://github.com/ethereum-optimism/data-transport-layer)
  -to be synced. The data transport layer is responsible for indexing transactions
  -from Layer One concurrently. The sequencer pulls in transactions from the data
  -transport layer and executes them. The URL of the data transport layer should be
  +Running a sequencer that ingests L1 to L2 transactions requires running the
  +[Data Transport Layer](https://github.com/ethereum-optimism/data-transport-layer).
  +The data transport layer is responsible for indexing transactions
  +from layer one Ethereum. It is possible to run a local development sequencer
  +without the data transport layer by turning off the sync service. To turn on
  +the sync service, use the config flag `--eth1.syncservice` or
  +`ETH1_SYNC_SERVICE_ENABLE`. The URL of the data transport layer should be
  used for the sequencer config option `--rollup.clienthttp`.
  -See the script `scripts/start.sh`. It sets many of the config options
  -and accepts CLI flags. For usage, run the command:
  +The `scripts` directory contains some scripts that make it easy to run a
  +local sequencer for development purposes.
  +
  +First, the genesis block must be initialized. This is because there are
  +predeployed contracts in the L2 state. The scripts to generate the genesis
  +block can be found in the `contracts` package. Be sure to run those first.
  ```bash
  -$ ./scripts/start.sh -h
  +$ ./scripts/init.sh
  ```
  -This may be suitable for simple usecases, users that need more flexibility
  -with their configuration can run the command:
  +This script can be ran with the `DEVELOPMENT` env var set which will add
  +a prefunded account to the genesis state that can be used for development.
  +
  +The `start.sh` script is used to start `geth`. It hardcodes a bunch of
  +common config values for when running `geth`.
  ```bash
  -$ USING_OVM=true ./build/bin/geth \
  - --rollup.clienthttp $ROLLUP_CLIENT_HTTP \
  - --rollup.pollinterval 3s \
  - --eth1.ctcdeploymentheight $CTC_DEPLOY_HEIGHT \
  - --eth1.syncservice \
  - --rpc \
  - --dev \
  - --rpcaddr "0.0.0.0" \
  - --rpccorsdomain '*' \
  - --wsaddr "0.0.0.0" \
  - --wsport 8546 \
  - --wsorigins '*' \
  - --rpcapi 'eth,net,rollup,web3' \
  - --gasprice '0' \
  - --targetgaslimit '8000000' \
  - --nousb \
  - --gcmode=archive \
  - --ipcdisable
  +$ ./scripts/start.sh
  ```
  -To persist the database, pass the `--datadir` with a path to the directory for
  -the database to be persisted in. Without this flag, an in memory database will
  -be used. To tune the log level, use the `--verbosity` flag with an integer.
  +This script can be modified to work with `dlv` by prefixing the `$cmd`
  +with `dlv exec` and being sure to prefix the `geth` arguments with `--`
  +so they are interpreted as arguments to `geth` instead of `dlv`.
  ### Running a Verifier
  