Use EVE output instead of pcapinfo

Suricata 2.0 features EVE JSON output which contains all the necessary info
to add alert related disseector and more. This patch parses eve.json file
and display information about alerts in wireshark.
Display TLS related info

This patch adds parsing for TLS message contained in EVE file. This
allow to add information such as TLS subject or issuerdn inside
wireshark.
Suppress pcapinfo code

Suricata EVE file is far more interesting. So this patch suppresses
the code related to pcapinfo.
Fix README

We now use EVE format.