chore(gems) use coffee-script-source 1.8.0

Author: rmosolgo

react-rails.gemspec

@@ -25,6 +25,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'jbuilder'
 
   s.add_dependency 'execjs'
+  s.add_dependency 'coffee-script-source', '1.8.0'
   s.add_dependency 'rails', '>= 3.1'
   s.add_dependency 'react-source', '0.12'
   s.add_dependency 'connection_pool'