added https logging

I found exaproxy is not logging https requests. So I have copied one line from http request.

```
ExaProxy 29431  supervisor    Starting exaproxy version 1.1.2
ExaProxy 29431  supervisor    python version 2.7.5 (default, Feb 24 2014, 15:33:10)  [GCC 4.6.3 20120306 (Red Hat 4.6.3-2)]
ExaProxy 29431  usage         2014-03-01 03:23:24 1393644204.76 47 192.168.1.154 CONNECT www.google.com:443/ PERMIT/www.google.com
```