Modify read-trees tool to accept multiple files.
Modify read-trees tool to accept multiple files.

You can run across the whole treebank with
    ./read-trees path/to/treebank-3/parsed/mrg/wsj/*/*

gef756/meta,husseinhazimeh/meta,gef756/meta,esparza83/meta,saq7/MeTA,esparza83/meta,esparza83/meta,gef756/meta,saq7/MeTA,esparza83/meta,husseinhazimeh/meta,saq7/MeTA,gef756/meta,husseinhazimeh/meta,husseinhazimeh/meta,husseinhazimeh/meta,gef756/meta,esparza83/meta