Converting target specification to use Nmap's notation.  This commit is modifying the tests and a few usages of old functions.
Slowly converting to the nmap notation.
Fixed boroken tests.
Nmap target specification mimicked!
Simplified target_expansion using a nifty regular expression.
Checking for invalid target specifications.
Fixing a comment.
Fixing a comment.
Fixing some alignment issues.
Simplified product use.
Splitting ip expansion in a more readable way.
Changing variable names to save space.
Fixing comments and readme.
Removing egg badge.
Merge pull request #34 from rolobio/nmap-like-target-specification

Nmap like target specification