Set up Rubocop

Author: peterzhu2118

.rubocop.yml

@@ -1,4 +1,10 @@
+inherit_gem:
+  rubocop-shopify: rubocop.yml
+
+require: rubocop-minitest
+
 AllCops:
+  SuggestExtensions: false
   TargetRubyVersion: 2.6
 
 Style/StringLiterals:

shopify-ruby-definitions.gemspec

@@ -29,9 +29,6 @@ Gem::Specification.new do |spec|
   spec.executables = spec.files.grep(%r{\Aexe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  # Uncomment to register a new dependency of your gem
-  # spec.add_dependency "example-gem", "~> 1.0"
-
-  # For more information and examples about making a new gem, check out our
-  # guide at: https://bundler.io/guides/creating_gem.html
+  spec.add_development_dependency("rubocop-minitest")
+  spec.add_development_dependency("rubocop-shopify")
 end