# Given a string, replace every instance of sad to happy
# 
# add_more_ruby("The clowns were sad.")         # => "The clowns were happy."
# add_more_ruby("The sad dad said sad stuff.")  # => "The happy dad said happy stuff."
# add_more_ruby("Sad times are ahead!")         # => "Happy times are ahead!"

def add_more_ruby(string)
	string.gsub('sad', 'happy').gsub('Sad', 'Happy')
end
