Modify README.md

Author: rich-iannone

README.md

@@ -303,7 +303,7 @@ You can install the development version of **DiagrammeR** from **GitHub** using
 devtools::install_github('rich-iannone/DiagrammeR')
 ```
 
-Or, get the v0.8.1 release from **CRAN**.
+Or, get the v0.8.2 release from **CRAN**.
 
 ```r
 install.packages('DiagrammeR')