Add function to get the number of operating days in the month. master
-rw-r--r-- 28 .Rbuildignore
-rw-r--r-- 40 .gitignore
-rw-r--r-- 385 DESCRIPTION
-rw-r--r-- 46 NAMESPACE
drwxr-xr-x - R
drwxr-xr-x - man
-rw-r--r-- 396 operatingdays.Rproj