Add variables to a query
Examples
if (FALSE) { # \dontrun{
endpoint <- "dailyData/byState"
variable.list <- list("state" = '37',
"bdate" = '20200101',
"edate" = '20200102',
"param" = '44201')
call <- epair::create.base.call(endpoint)
call <- add.variables(call, variable.list)
call
} # }