update: update index.js and add rework-visit
update: update package.json and init test context
add: accomplishes the basic distinguish function.
add: add test case for lib.
update: add *.swp to gitignore
add: add two function for color type converting.
add: add travis CI config
update: update test case and add chai assert.
update: remove console code and update package.json
fix: fixed some regex bug in lib/index.js
update: update test case and refact some test code.
update: update color-diff to v1.5
update: update closest color to furthest color.
update: update the way of receiving parameter in distinguish.
update: update test case.
remove: remove test.js from lib