Merge pull request #1106 from reitermarkus/rubocop

Library/.rubocop_rules.yml

Library/.rubocop_todo.yml

Library/Homebrew/build_options.rb

Library/Homebrew/checksum.rb

Library/Homebrew/compat/dependency_collector.rb

Library/Homebrew/compat/formula.rb

Library/Homebrew/compat/formula_specialties.rb

Library/Homebrew/compilers.rb

Library/Homebrew/debrew.rb

Library/Homebrew/dependencies.rb

Library/Homebrew/dependency.rb

Library/Homebrew/development_tools.rb

Library/Homebrew/download_strategy.rb

Library/Homebrew/emoji.rb

Library/Homebrew/extend/ENV/std.rb

Library/Homebrew/extend/ENV/super.rb

Library/Homebrew/extend/fileutils.rb

Library/Homebrew/extend/os/linux/hardware/cpu.rb

Library/Homebrew/extend/os/mac/development_tools.rb

Library/Homebrew/extend/os/mac/extend/ENV/super.rb