Description: Two trees with seven taxa. This example calculates the diferences between the two trees using the split method and realize a random analysis with 100 repetitions.
         Parameters: -f example1.txt -r random -n 100 -m split
         How to run: open a terminal an write 'perl topd_v* -f example1.txt -r random -n 100 -m split' (replace * for the appropiate version)