Working Implementation
Add example to doc

Add example to doc
raise error for unencrypted communication.
add functional tests.
Merge branch 'winrm-sspi-nego' of https://github.com/opscode/winrm-s into winrm-sspi-nego
add negative tests
allow the tiny version to vary
allow the tiny version to vary, greater than 1.1.3
Merge branch 'winrm-sspi-nego' of https://github.com/opscode/winrm-s into winrm-sspi-nego
patch only on windows.
unix only filter.
assert functional spec related env vars only on windows.
add unit tests for windows and unix.
fix few unit test on unix
unix file names are case sensitive.
add travis file.
s alias deprecated in rspec 3
fix deprecations.
add 2.1.0 to travis test.
add test group to gemfile.