refactoring
(╹◡╹)
(´・ω・｀)
fix description
update description
add 'done()'
create util.js
replace defaultOption.js with json file
refactoring
update test
add break statement
fix typo
update readme
fix link to default option
fix typo
fix cli
remove context
Merge pull request #33 from 1000ch/dev

refactoring
Fix typos, ratioOfDataUriSize
Fix cli