Added script to get newsroom train ids

import sys

from newsroom import jsonl

PATH_TO_NEWSROOM_DATA = sys.argv[1]

lines_to_write = []

with jsonl.open(PATH_TO_NEWSROOM_DATA, gzip = True) as file:

	for entry in file:

		link = entry["archive"]

		title = entry["title"]

		id_string = link + "\t||\t" + title

		lines_to_write.append(id_string)

with open("../data/newsroom_train.txt", "w") as f:

	for line in lines_to_write:

		f.write(line)