Change Makefile for test: remove *.py
Update keyword.txt
Implement train_bigram using Haskell
Modify Makefile to use TrainBigram.hs
Update .gitignore to ignore boj files for Haskell
Use TrainBigram.hs
Remove module name to use it as a Main module
Update README for Haskell
Remove --cahced train_bigram.cpp
Add train_bigram.cpp
Remove train_bigram.cpp target
Merge branch 'hs'