submodule add nkf.git, tag v2_1_3
cp nkf/NKF.python2/NKF_python.c yalibnkf.c
Replace python api with plain stdlib
add yalibnkf_free()
add yalibnkf.h
add yalibnkf_version()
make compiler happy
rename yalibnkf_convert_guess() to yalibnkf_guess()
added comments
yalibnkf_version: add COPY_RIGHT line
added package.json for clib
add .gitignore and LICENSE