Added super basic support for cookies
Improved cookie support, it's rudimentary but it works for sites that are being crawled with sessions.
Updated readme to reflect changes
Removed underscore dependency
Merge pull request #32 from ncrohn/master

Added support for cookies
Cookie support in progress.
Cookie jar passing test suite.
Cookie jar passing test suite.
Updated cookie documentation.
Completed documentation for cookies.
Updated documentation to reflect new iso8859 and cookie info.