First release

Structure

• content.js just sends and gets messages.
• popup.js sends and gets messages.
• background.js execute js files.
• Executed js files are in ./functions.
• Icons are in ./images
• index.html is for making privacy policy address.
• privacy-policy.html is in ./docs

New feature

• README.md file is created and guides are written.
• privacy-policy.html is created and only summary is added.