Update README.md

Add SSID and PW for attendees.

Author: barrettp

README.md

@@ -2,6 +2,9 @@
 
 [![Rendered Pluto.jl notebooks](https://img.shields.io/badge/Rendered_Pluto.jl_notebooks-blue)](https://denfc.github.io/AAS247Julia/notebooks)
 
+SSID: AAS 247 Winter
+Password: AAS247Winter
+
 This code base is using the [Julia Language](https://julialang.org/) and
 [DrWatson](https://juliadynamics.github.io/DrWatson.jl/stable/)
 to make a reproducible scientific project named AAS247Julia.