Default message should use rows and cols

[hadley]

logs <- vroom::vroom("cran-logs/2019-02-20.csv.gz", delim = ",")
#> Observations: 3,437,899                                                                            
#> Variables: 10

Should be:

logs <- vroom::vroom("cran-logs/2019-02-20.csv.gz", delim = ",")
#> Rows: 3,437,899                                                                            
#> Cols: 10

Because we have no idea whether the data is tidy or not

[jimhester]

I used Observations and Variables to match dplyr::glimpse(), the same is true there as well right?

But I am happy to change it, Rows and Cols are easier for me to interpret anyway.