update docs for demo

README.md

@@ -2,3 +2,19 @@ eth-netstats
 ============
 
 Ethereum Network Stats
+
+To run via Docker
+
+create a docker image via
+
+```
+docker build --tag="eth-netstats" path/to/eth-netstats-repo
+```
+
+run it via
+
+```
+docker run --publish=3000:3000 eth-netstats
+```
+
+see the interface at http://localhost:3000