| #utf8 detector | |
| Detect if a Buffer is utf8 encoded. | |
| It need The minimum amount of bytes is 4. | |
| ```javascript | |
| var fs = require('fs'); | |
| var isUtf8 = require('is-utf8'); | |
| var ansi = fs.readFileSync('ansi.txt'); | |
| var utf8 = fs.readFileSync('utf8.txt'); | |
| console.log('ansi.txt is utf8: '+isUtf8(ansi)); //false | |
| console.log('utf8.txt is utf8: '+isUtf8(utf8)); //true | |
| ``` | |