Refactored background script
Moved DefinitelyTyped folder
Renamed wrongly copied directories/files
Added automatic execution of background script
Added NPM+Grunt build system
Moved d.ts up to src folder
Added popup and refactored reference structure
Moved content script to new folder
Fixed reference paths
Moved update/install pages into folder
Moved manifest.json
Adjusted paths in manifest
Improved Grunt build system
Simplified build process again...
Removed old JS file
Added build guide in readme
Typo in readme
Removed unnecessary newlines
Removed dead code
Updated README instructions