fragattacks: clarify example pcaps

v1.3.2: reference presentation handouts and icmp-size parameter

fragattacks: updated README for 1.3.1 release

fragattack: clarify fragmented ping test sanity check

fragattack: version 1.2 on 15 november

fragattack: show version number in output

fragattacks: tweaks to README and SUMMARY

hostapd/wpa_supplicant 2.9

hostapd/wpa_supplicant 2.8

hostapd/wpa_supplicant 2.7