Gemfile.mustache in dropbox-sign-1.6.0

- old
+ new

@@ -4,7 +4,9 @@
 
 group :development, :test do
   gem 'rake', '~> 13.0.1'
   gem 'pry-byebug'
   gem 'rubocop', '~> 0.66.0'
+{{#useCustomTemplateCode}}
   gem 'json_spec', '~> 1.1.5'
+{{/useCustomTemplateCode}}
 end