combine demo & readme, erc721-watcher

docs/README.md

@@ -76,4 +76,47 @@ Ensure that watcher is of active kind. Update the kind in `server` config to act
 [server]
   kind = "active"
 ```
+
+
+### ERC721
  
+* Create a postgres12 database for the watcher:
+
+  ```bash
+  sudo su - postgres
+  createdb erc721-watcher
+  ```
+
+* If the watcher is an `active` watcher:
+
+  Create database for the job queue and enable the `pgcrypto` extension on them (https://github.com/timgit/pg-boss/blob/master/docs/usage.md#intro):
+
+  ```
+  createdb erc721-watcher-job-queue
+  ```
+
+  ```
+  postgres@tesla:~$ psql -U postgres -h localhost erc721-watcher-job-queue
+  Password for user postgres:
+  psql (12.7 (Ubuntu 12.7-1.pgdg18.04+1))
+  SSL connection (protocol: TLSv1.3, cipher: TLS_AES_256_GCM_SHA384, bits: 256, compression: off)
+  Type "help" for help.
+
+  erc721-watcher-job-queue=# CREATE EXTENSION pgcrypto;
+  CREATE EXTENSION
+  erc721-watcher-job-queue=# exit
+  ```
+
+* The following core services should be setup and running on localhost:
+
+  * `vulcanize/go-ethereum` [v1.10.18-statediff-4.0.2-alpha](https://github.com/vulcanize/go-ethereum/releases/tag/v1.10.18-statediff-4.0.2-alpha) on port 8545
+
+  * `vulcanize/ipld-eth-server` [v4.0.3-alpha](https://github.com/vulcanize/ipld-eth-server/releases/tag/v4.0.3-alpha) with native GQL API enabled, on port 8082
+
+* In the [config file](./environments/local.toml):
+
+  * Update the database connection settings.
+
+  * Update the `upstream` config and provide the `ipld-eth-server` GQL API endpoint.
+
+  * Update the `server` config with state checkpoint settings.