Update nokogiri to 1.5.5.
Update nokogiri to 1.5.5.

Zauberstuhl/vines,Zauberstuhl/diaspora-vines,diaspora/vines,artofhuman/vines,AliEn707/vines,diaspora/vines,AliEn707/vines,negativecode/vines,artofhuman/vines,Zauberstuhl/vines,artofhuman/vines,negativecode/vines,Zauberstuhl/diaspora-vines,AliEn707/vines