Merge pull request #18 from ynishi/add_keyword

add npm package keywords

Merge pull request #13 from ynishi/add_options

support options

Merge pull request #10 from ynishi/support_header

fix README for version 0.0.6

Merge pull request #6 from ynishi/refactor_dir

refactor build setting and dir

Merge pull request #5 from ynishi/fix_bom

fix about bom

publish npm