Add data file urls for Macedonian-English

Author: stefan-it

tensor2tensor/data_generators/generator_utils.py

@@ -244,6 +244,11 @@ def gunzip_file(gz_path, new_path):
         "http://www.statmt.org/wmt13/training-parallel-un.tgz",
         ["un/undoc.2000.fr-en.en", "un/undoc.2000.fr-en.fr"]
     ],
+    # Macedonian-English
+    [
+        "https://github.com/stefan-it/nmt-mk-en/raw/master/data/setimes.mk-en.train.tgz",  # pylint: disable=line-too-long
+        ["train.mk", "train.en"]
+    ],
 ]