Update README, with the missing bsd library
Fix for ettercap 0.8.1 lua cmake error on osx 10.10 (Hack)

This is a small hack for fixing lua cmake error on OS X 10.10 Yosemite.

like this :
------
CMake Error at src/CMakeLists.txt:191 (SET_TARGET_PROPERTIES):
  set_target_properties Can not find target to add properties to: ettercap
------
http://pastebin.com/WS9wwuKj
Merge pull request #617 from LocutusOfBorg/forgot-bsd

merged, thanks
Merge pull request #618 from SajjadPourali/patch-1

Fix for ettercap 0.8.1 lua cmake error on osx 10.10