Whois Spice - Updates



**Updates Summary:**
+ Fixed timestamp issue.
  + The IA appears to have been displaying an ISO timestamp as it looks like the API was updated to include the timezone (e.g PST) meaning the `replace` function that was used no longer worked. 
+ Display domain NS hosts.
  + This is a useful function to have IMO. It doesn't add to much more data to the Spice (height wise) 

#### Current
https://duckduckgo.com/?q=whois+duckduckgo.com 

![image](https://cloud.githubusercontent.com/assets/5282264/5337115/c7d752b8-7eff-11e4-9176-73079ffb3d5c.png)

#### Updated :smiley: 
![image](https://cloud.githubusercontent.com/assets/5282264/5337121/dd35d72e-7eff-11e4-9149-d1531a102d46.png)
![image](https://cloud.githubusercontent.com/assets/5282264/5337122/e259d520-7eff-11e4-9f64-1770159fa8a2.png)
I've noticed that `is duckduckgo.com available?` fails because the `is` isn't striped, however it's listed in the $whois_keywords_qr (which I'm stripping) guessing the way it's used is with other words? Tell me your regex magic :laughing: