Allow for file names containing '-'
Allow for file names containing '-'

garyrh/bookreader,brisandbeans/bookreader,gootdude/bookreader,yankl/bookreader,brisandbeans/bookreader,yankl/bookreader,niksu/bookreader,openlibrary/bookreader,niksu/bookreader,internetarchive/bookreader,niksu/bookreader,brisandbeans/bookreader,internetarchive/bookreader,openlibrary/bookreader,gootdude/bookreader,nikolas/bookreader,garyrh/bookreader,Islandora/internet_archive_bookreader,brisandbeans/bookreader,garyrh/bookreader,niksu/bookreader,gootdude/bookreader,yankl/bookreader,nikolas/bookreader,gootdude/bookreader,Islandora/internet_archive_bookreader,brisandbeans/bookreader,garyrh/bookreader,Islandora/internet_archive_bookreader,Islandora/internet_archive_bookreader,yankl/bookreader,openlibrary/bookreader,niksu/bookreader,garyrh/bookreader,openlibrary/bookreader,yankl/bookreader,openlibrary/bookreader,Islandora/internet_archive_bookreader