Returns the environment variable EBD_PATH, which users are encouraged to
set to the directory that stores the eBird Basic Dataset (EBD) text files.
auk_get_ebd_path()The path stored in the EBD_PATH environment variable.
Other paths:
auk_get_awk_path(),
auk_set_awk_path(),
auk_set_ebd_path()
auk_get_ebd_path()
#> [1] "/Users/mes335/data/ebird"