chore: add ostruct and benchmark in gemfile (#739)

Author: tiwarishubham635

Gemfile

@@ -3,4 +3,6 @@ gem 'simplecov', require: false, group: :test
 gemspec
 
 gem "base64"
+gem "benchmark"
+gem "ostruct"
 gem "rexml"

twilio-ruby.gemspec

@@ -28,6 +28,8 @@ Gem::Specification.new do |spec|
   spec.add_dependency('jwt', '>= 1.5', '< 3.0')
   spec.add_dependency('nokogiri', '>= 1.6', '< 2.0')
   spec.add_dependency('faraday', '>= 0.9', '< 3.0')
+  spec.add_dependency 'ostruct'
+  spec.add_dependency 'benchmark'
   # Workaround for RBX <= 2.2.1, should be fixed in next version
   spec.add_dependency('rubysl') if defined?(RUBY_ENGINE) && RUBY_ENGINE == 'rbx'