Show full text of a retweet. Fixes issue #3

--- ORIGINAL ISSUE ---
Currently, retweets from a list such as
```json
{
"text": "RT @GreatFireChina: Github suffered man in the middle attack in China! SSL certificate is self-signed when accessing from China! http:// ...",
"truncated": false
}
```
are truncated by the Twitter API. The original message is packed in another JSON object, which is only included in retweeted statuses:
```json
"retweeted_status":  {
      "text": "Github suffered man in the middle attack in China! SSL certificate is self-signed when accessing from China! http://t.co/8wWeEKR5",
      "truncated": false,
}
```

This is an issue in Net::Twitter::Lite, but there might be a chance a workaround can be made within this plugin.