Update README.md

jaehyukchoi · web-flow · commit 22016335d895 · 2021-01-31T23:43:12.000+08:00
diff --git a/README.md b/README.md
@@ -9,5 +9,5 @@ Financial Engineering functions in R
 Install `devtools` package in run
 ```R
 library(devtools)
-install_github("PyFE/FE-R", subdir="pakage")
+devtools::install_github("PyFE/FE-R", subdir="pakage")
 ```
