Add newline at end of LICENSE
Add JSLint directives
JSLinted
Refactoring

Made only one global variable: CFFVK
Renamed stuff
Prettified `manifest.json`
More refactoring

Renamed more stuff
Changed some class names and their handling
CSSLinted
Respect 80 symbols margin (with a couple exceptions)
Updated `.gitignore`
Refactoring: closures
JSHinted: clickHandler
Refactoring

Got rid of unnecessary `if`
Renamed one variable