Added expiration time to profiles list

I'm working on a cron job to periodically check my certificates and provisioning profiles to give my build automation team advanced warning when expirations are about to happen, so that we don't have any interrupted builds.

The Certificates list shows an expiration date, but the provisioning profiles didn't.  So therefore I added the expiration column to the provisioning profiles list.

If you don't like the time format, I can change it.  Currently the output looks like so:

```
+---------------------------------------------+------------+---------------------------+---------+
| Profile                                     | App ID     | Expiration                | Status  |
+---------------------------------------------+------------+---------------------------+---------+
| ********                                    | ********** | 2013-08-19 10:53:05 -1000 | Expired |
.....
```