Remove unused tiny configs, add description of micro config

Fix reading from interleaved files in the case there is one file

Add _en_nl configs that interleave english with dutch documents

Add 10 tiny configs each with different files

Update README.md

Update README.md

Update README.md

Renamed validation files back to '-validation'

Rename validation files

Fix # validation files

Reformat and change # validation files

Add README.md

Add validation files

Update file format

Add train files

Add dataset script

initial commit