added rubyntlm support
changing this ntlm first req to a head -- should not be just any type to start
upstream requirements make me a sad panda and so I hack
removing unnec keepalive cp from rubyntlm example. rebumping version - not nec after I cleaned the gemset
ntlm support
removed unintentional whitespace edits
added unit tests and Rack simulated NTLM exchange
missed require necessary for external clients of the gem