onelogin/ruby-saml — pull request #78 by danielfarrell (2013-04-05 00:02:15+00:00)
Title: Depends on constant that is only in nokogiri 1.5+

I ran into this when including into an app that already was locked at a nokogiri 1.4.x version. It gave the following error:

uninitialized constant Nokogiri::XML::XML_C14N_EXCLUSIVE_1_0

That constant came into being with nokogiri 1.5, so this should depend on that.