Update README with specific Contributing section
Update README with specific Contributing section

AndyObtiva/Montreal.rb,AndyObtiva/Montreal.rb,montrealrb/Montreal.rb,AleksandrKudashkin/Montreal.rb,AleksandrKudashkin/Montreal.rb,AndyObtiva/Montreal.rb,montrealrb/Montreal.rb,AleksandrKudashkin/Montreal.rb,montrealrb/Montreal.rb