add explaination to background.js and content_script.js
add browser action for hotkey function
status: add default browser action hotkey
add explaination to background.js and content_script.js
add browser action for hotkey function
status: add default browser action hotkey
Merge branch 'stable' of https://github.com/ophidianwang/paste_later into stable
change icon background color from transparent to white
Update README.md
Merge pull request #2 from ophidianwang/stable

change icon and update Readme.md