Fetches category of content hosted by a domain according to Shalla.
The function checks if path to the shalla file is provided by the user.
If not, it looks for shalla_domain_category.csv in the working directory.
Usage
shalla_cat(domains = NULL, use_file = NULL)
Arguments
domains
vector of domain names
use_file
path to the latest shallalist file downloaded using get_shalla_data
Value
data.frame with original list and content category of the domain