Added rabl to dependencies

Author: gazay

gon.gemspec

@@ -19,5 +19,7 @@ Gem::Specification.new do |s|
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
   s.add_dependency "actionpack", '>= 2.3.0'
+  s.add_dependency "rabl"
+  s.add_dependency "yajl-ruby"
   s.add_development_dependency "rspec"
 end