excluding binlocal and eclipse settings from version control
twitterlists now handled the same as Twitter_Users

to clean up the clutter in the Twitter object, I've extracted most
twitterlist-releated methods from the Twitter object into a new object
Twitter_Lists which is accessed the same as Twitter_Users, i.e.
Twitter.lists() vs Twitter.users()

also, the TwitterList object no longer makes direct calls to twitter,
again analogous to other objects in the library: only the json parsing
is done in TwitterList, the calls are mostly handled by Twitter_Lists