Add WinRM over SSL support

Add WinRM over SSL support

This was pretty straightforward, except a newer version of winrm is required to disable SSL cert validation - I have modified Gemfile and the gemspec file for this but it's almost certainly not correct and mergeable as is.


e.g.

    config.winrm.ssl = true

This line needs to be above the use of `@ssl` on line 28 and 29, or the port always gets set to 5986