Update README.md

Author: milankl

README.md

@@ -2,7 +2,8 @@
 
 Repository for the implementation of the stochastic stirring forcing and jet drag following
 [Barnes and Hartmann, 2011](https://journals.ametsoc.org/view/journals/atsc/68/12/jas-d-11-039.1.xml?tab_body=fulltext-display#bib14)
-and [Vallis et al. 2004](https://journals.ametsoc.org/view/journals/atsc/61/3/1520-0469_2004_061_0264_amasdm_2.0.co_2.xml).
+and [Vallis et al. 2004](https://journals.ametsoc.org/view/journals/atsc/61/3/1520-0469_2004_061_0264_amasdm_2.0.co_2.xml)
+for SpeedyWeather.jl.
 
 ## Background