README: Add set-chain

inje · inje · commit 833cd4424ad9 · 2018-10-06T14:46:19.000-07:00
diff --git a/README.md b/README.md
@@ -22,3 +22,9 @@ yarn start
 
 View your local server at `http://localhost:3000/`
 
+
+Start your own chain
+```
+yarn set-chain
+```
+
