Merge pull request #15 from opscode/adamedx/ruby-1-9-3-travis

No Ruby 1.9.2 for Travis
Merge pull request #16 from opscode/adamedx/knife-windows-issue-124

Fixed issues related to http client v2.5 (knife-windows #124)
Merge pull request #17 from opscode/adamedx/knife-windows-124-0-stable

Merge ntlm fix for knife-windows 124 to 0-stable