Fixed parse error of tidyverse package names (close #93)

[coatless]

Implements the fix by @kent37 in #93 regarding the output of readxl being displayed as readxl\n(>= instead of the proper name of readxl in tidyverse_packages()

Making:

tidyverse::tidyverse_packages()
#>  [1] "broom"       "cli"         "crayon"      "dplyr"       "dbplyr"     
#>  [6] "forcats"     "ggplot2"     "haven"       "hms"         "httr"       
#> [11] "jsonlite"    "lubridate"   "magrittr"    "modelr"      "purrr"      
#> [16] "readr"       "readxl\n(>=" "reprex"      "rlang"       "rstudioapi" 
#> [21] "rvest"       "stringr"     "tibble"      "tidyr"       "xml2"       
#> [26] "tidyverse"

Look like:

tidyverse::tidyverse_packages()
#>  [1] "broom"       "cli"         "crayon"      "dplyr"       "dbplyr"     
#>  [6] "forcats"     "ggplot2"     "haven"       "hms"         "httr"       
#> [11] "jsonlite"    "lubridate"   "magrittr"    "modelr"      "purrr"      
#> [16] "readr"       "readxl" "reprex"      "rlang"       "rstudioapi" 
#> [21] "rvest"       "stringr"     "tibble"      "tidyr"       "xml2"       
#> [26] "tidyverse"

[jennybc]

Thanks!