Merge pull request #26 from ganye/master

Cleaned up empty try/except statements
fixed a bug
Merge branch 'master' of https://github.com/DanMcInerney/LANs.py

'merging'
Fixed the 'os is not defined' bug which occurs if you don't have python-nfqueue installed.
Merge pull request #27 from gkbrk/master

Fixed the 'os is not defined' bug which occurs if you don't have python-nfqueue installed.
fixed os.* bugs
fixed user_agent bug
faster DNS server lookup + DNS spoofing 100% reliable (again, broke it a while ago)
readme
added dns spoofing for all domains and updated readme to reflect
minor
fixed arp caching bug and went back to a more reliable code injection technique
fixed dnsmac finding
updated to-do list, fixed minor stuff
html injection more reliable via increasing queues process_pending count
fixed ctrl-c bug
changed some ordering around to avoid possible threading output issues
README
changed import Exception to ImportError