Relax dependency on Nokogiri
Relax dependency on Nokogiri

Removes dependency conflicts in applications that require
later 1.x-series versions.

 '~> 1.5':    don't accidentally select 2.x

alistairpialek/winrb,WinRb/WinRM,modulexcite/WinRM,ClogenyTechnologies/WinRM,WinRb/WinRM,ManageIQ/WinRM