Shift symbol(⇧) not recognized

[Minung Han]

Shift symbol(⇧) not recognized in window/linux

Issue

console.log(convert('⌘+s')); // Ctrl+S
console.log(convert('⇧+s')); // ⇧+S

Expect

console.log(convert('⌘+s')); // Ctrl+S
console.log(convert('⇧+s')); // Shift+S