Typo

At [electron.js](https://github.com/Monogatari/Demo/blob/master/electron.js) [line 46](https://github.com/Monogatari/Demo/blob/d4605e768ceef2d2f2a5685c7046a945d48276f5/electron.js#L46)

```js
fullscrenable: true,
```
This is wrong. It supposed to be
```js
fullscreenable: true,
```
Yes, double 'e'