removed encoding from writefilesync and upped version

got this error:

```bash
Error: Unknown encoding
    at Buffer.write (buffer.js:382:13)
    at new Buffer (buffer.js:261:26)
    at Object.fs.writeFileSync (fs.js:758:12)
```

this error is gone when I remove the specified encoding for writefilesync in tasks/breakshots.coffee at line 97. 

> The encoding option is ignored if data is a buffer. It defaults to 'utf8'.

Since it defaults to utf8 anyway (`fs.writefile: encoding String | Null default = 'utf8'`), I think we can safely change this part, seeing as output is always a buffer.

`fs.writeFileSync(item.dest, compiled, {encoding:'utf8'})`

becomes

`fs.writeFileSync(item.dest, compiled)`