Merge pull request #41 from iatanas0v/patch-1

Inject live reload on 422

Author: igorkasyanchuk

lib/rails_live_reload/middleware/base.rb

@@ -18,7 +18,7 @@ def call!(env)
           request = ActionDispatch::Request.new(env)
           status, headers, body = @app.call(env)
 
-          if html?(headers) && (status == 500 || (status.to_s =~ /20./ && request.get?))
+          if html?(headers) && (status == 500 || status == 422 || (status.to_s =~ /20./ && request.get?))
             return inject_rails_live_reload(request, status, headers, body)
           end