fix url path
Update README.md
Update README.md
Fix: boombox.js
Merge branch 'master' of github.com:CyberAgent/boombox.js
release: 0.6.6
Fix: bower.json version
Added: add component support
Fixed: fix indent
add component section
Update README.md
Added: add English doc.

trannslate en until features

translate reference infomation

translate till browser test

translate untill loop play section

translate until use filter

translate until priority

finish translate

add document's link for English

fix some

fix typo

add sentence

fix translation based on comments.

add links to Japanese README
Merge pull request #4 from Layzie/add-readme-en

Add English document
Update README_en.md
Update README.md
Update README.md
Update README_en.md