update README

Author: stemangiola

README.md

@@ -26,10 +26,14 @@ More details on the workshop are below.
 ## Workshop package installation 
 
 If you want to install the packages and material post-workshop, the
-instructions are below. The workshop is designed for R `4.4` and
-Bioconductor 3.19. 
+instructions are below. The workshop is designed for R `4.5` and
+Bioconductor 3.21. 
 
 ```
+# Update Bioconductor
+if (!require("BiocManager", quietly = TRUE))
+    install.packages("BiocManager")
+BiocManager::install(version = "3.21")
 
 # Install workshop package
 #install.packages('remotes')