Replace += with << for string concatenation

Author: stepantubanov

lib/gon/helpers.rb

@@ -9,17 +9,17 @@ def include_gon(options = {})
         if Gon.request_env && Gon.all_variables.present?
           data = Gon.all_variables
           namespace = options[:namespace] || 'gon'
-          script = "<script>window." + namespace + " = {};"
-          unless options[:camel_case]
+          script = '<script>window.' + namespace + ' = {};'
+          if options[:camel_case]
             data.each do |key, val|
-              script += namespace + "." + key.to_s + '=' + val.to_json + ";"
+              script << namespace + '.' + key.to_s.camelize(:lower) + '=' + val.to_json + ';'
             end
           else
             data.each do |key, val|
-              script += namespace + "." + key.to_s.camelize(:lower) + '=' + val.to_json + ";"
+              script << namespace + '.' + key.to_s + '=' + val.to_json + ';'
             end
           end
-          script += "</script>"
+          script << '</script>'
           script.html_safe
         else
           ""