target jekyll 3 beta

see #84

jekyll-scholar.gemspec

@@ -25,7 +25,7 @@ Gem::Specification.new do |s|
   s.required_rubygems_version = '>= 1.3.6'
   s.rubyforge_project = s.name
 
-  s.add_runtime_dependency('jekyll', '~> 2.0')
+  s.add_runtime_dependency('jekyll', '>= 3.0.0.beta')
   s.add_runtime_dependency('citeproc-ruby', '~> 1.0')
   s.add_runtime_dependency('csl-styles', '~> 1.0')
   s.add_runtime_dependency('bibtex-ruby', '~> 4.0', '>= 4.0.13')