Loosen Jekyll requirement for jekyll/docker-jekyll -> jekyll/beta.

Author: Jordon Bedwell

jekyll-gist.gemspec

@@ -23,5 +23,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec"
   spec.add_development_dependency "webmock"
-  spec.add_development_dependency "jekyll", "~> 2.0"
+  spec.add_development_dependency "jekyll", ">= 2.0"
 end