README.md in graphql_rails-0.3.3 vs README.md in graphql_rails-0.4.0

@@ -1,9 +1,10 @@
 # GraphqlRails
 
 [![Build Status](https://travis-ci.org/samesystem/graphql_rails.svg?branch=master)](https://travis-ci.org/samesystem/graphql_rails)
 [![codecov](https://codecov.io/gh/samesystem/graphql_rails/branch/master/graph/badge.svg)](https://codecov.io/gh/samesystem/graphql_rails)
+[![Documentation](https://readthedocs.org/projects/ansicolortags/badge/?version=latest)](https://samesystem.github.io/graphql_rails)
 
 Rails style structure for GrapQL API.
 
 ## Installation
 
@@ -167,9 +168,13 @@
       end
     end
   end
 end
 ```
+
+## Detailed documentation
+
+Check https://samesystem.github.io/graphql_rails for more details
 
 
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.