Add link to interactive hello world plot from Readme.md

Change-Id: I545f669ac3becf9f6a2dba0887de7b73d81022bb

Link plot image in Readme to interactive version

Change-Id: I0e2e7a44462aeb7091acddc36cfddcab66a0859f
diff --git a/figures/hello-world.png b/figures/hello-world.png
index 031872d..0f2bd73 100644
--- a/figures/hello-world.png
+++ b/figures/hello-world.png
Binary files differ