ripple/ripple-lib — pull request #34 by chgwei (2013-12-11 18:35:29+00:00)
Title: Improvement `remote.request_book_offers` parameters passing

As the example in doc reference:
```js
var request = remote.request_book_offers({
gets: {
'currency':'XRP'
},
pays: {
'currency':'USD',
'issuer': 'rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B'
}
});
```
It will raise `TypeError: Cannot read property 'currency' of undefined`.
Fixed issue with parsing parameters