Move development dependencies from gemspec to Gemfile

Resolve RuboCop offenses.

Author: AlexWayfer

Gemfile

@@ -5,4 +5,16 @@ source 'https://rubygems.org'
 # Specify your gem's dependencies in grape-swagger-representable.gemspec
 gemspec
 
+gem 'bundler'
+gem 'multi_json'
+gem 'pry' unless RUBY_PLATFORM.eql?('java') || RUBY_ENGINE.eql?('rbx')
+gem 'pry-byebug' unless RUBY_PLATFORM.eql?('java') || RUBY_ENGINE.eql?('rbx')
+gem 'rack-cors'
+gem 'rack-test'
+gem 'rake'
+gem 'redcarpet' unless RUBY_PLATFORM.eql?('java') || RUBY_ENGINE.eql?('rbx')
+gem 'rouge' unless RUBY_PLATFORM.eql?('java') || RUBY_ENGINE.eql?('rbx')
+gem 'rspec', '~> 3.0'
+gem 'rubocop', '~> 1.63.4'
+
 gem 'grape-swagger', github: 'ruby-grape/grape-swagger'

grape-swagger-representable.gemspec

@@ -21,16 +21,4 @@ Gem::Specification.new do |s|
 
   s.add_runtime_dependency 'grape-swagger', '~> 2.0'
   s.add_runtime_dependency 'representable', '~> 3.2'
-
-  s.add_development_dependency 'bundler'
-  s.add_development_dependency 'multi_json'
-  s.add_development_dependency 'pry' unless RUBY_PLATFORM.eql?('java') || RUBY_ENGINE.eql?('rbx')
-  s.add_development_dependency 'pry-byebug' unless RUBY_PLATFORM.eql?('java') || RUBY_ENGINE.eql?('rbx')
-  s.add_development_dependency 'rack-cors'
-  s.add_development_dependency 'rack-test'
-  s.add_development_dependency 'rake'
-  s.add_development_dependency 'redcarpet' unless RUBY_PLATFORM.eql?('java') || RUBY_ENGINE.eql?('rbx')
-  s.add_development_dependency 'rouge' unless RUBY_PLATFORM.eql?('java') || RUBY_ENGINE.eql?('rbx')
-  s.add_development_dependency 'rspec', '~> 3.0'
-  s.add_development_dependency 'rubocop', '~> 1.63.4'
 end