add succinct property to constructor options

Remove unused self var

You can now add a new property to options passed in to the constructor

```js
  new Antr({
    dirname: [__dirname + '/../test/unit', __dirname + '/../test/app'],
    filter: undefined,
    batchSize: 1,
    timeout: 60,
    succinct: 1,
    progressBar: false
  }, function (err, stats) {
    if( err ) {
      return cb({status_code: 417, error: stats});
    } else {
      return cb(null, {status_code:200, data:stats});
    }
  });
```

So that we limit the amount of info placed on stdout/stderr