Neo4j docs: mention docker option

refs #32

hetnet/neo4j/README.md

@@ -12,21 +12,32 @@ This adds source/target metanode awareness to relationship types and [enables](h
 
 ## Neo4j setup instructions
 
-Download and extract Neo4j 3.0 Community Edition [from Neo4j](http://neo4j.com/download/other-releases/ "Neo4j Releases").
-Make sure the Neo4j server is stopped. Navigate to the `data/databases` directory inside the Neo4j directory and run:
+### Importing the database
+
+Download and extract Neo4j Community Edition version 3.* [from Neo4j](http://neo4j.com/download/other-releases/ "Neo4j Releases").
+Make sure the Neo4j server is stopped.
+Navigate to the `data/databases` directory inside the Neo4j directory and run:
 
 ```sh
 # Backup graph.db directory if it exists
 if [ -d "graph.db" ]; then
-  mv graph.db graph.db.backup_`date +%F`
+  mv graph.db graph.db.backup_$(date +%F)
 fi
 
 # Download and extract graph.db for Hetionet v1.0
 curl --location https://github.com/hetio/hetionet/raw/master/hetnet/neo4j/hetionet-v1.0.db.tar.bz2 | tar --extract --bzip2
 ```
 
-If curl throws an error related to SSL or certificates, you can add the `--insecure` argument to `curl` to allow connections to SSL sites without certs.
+If curl throws an error related to SSL or certificates,
+you can add the `--insecure` argument to `curl` to allow connections to SSL sites without certs.
 
-The above commands should create a `graph.db` directory inside `data`. You should now be able to power up your Neo4j server.
+The above commands should create a `graph.db` directory inside `data`.
+You should now be able to power up your Neo4j server.
 Once the server is running you can access the browser at http://localhost:7474/.
 Delete the `graph.db` directory to uninstall Hetionet as the default Neo4j database.
+
+### Via docker
+
+While the docker image is primarily designed to serve the production instance available at <https://neo4j.het.io>,
+it can also be used to launch the database locally.
+See command in the [`docker`](docker#running-the-docker) directory README for more information.