Pin react-rails to version 2.6.1

Author: depfu[bot]

react-rails-benchmark_renderer.gemspec

@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency "tilt"
   spec.add_dependency "activesupport", ">= 3.2"
-  spec.add_dependency "react-rails", ">= 1.0"
+  spec.add_dependency "react-rails", "2.6.1"
   spec.add_development_dependency "bundler", "~> 1.10"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec"