1. Implement classes for SinglyLinkedLists and Nodes. You can do this in ruby or js in one of the LinkedList files provided.

Note: If you are using ruby don't forget your attr_accessor

    def initialize(value, next = nil)
      @value = value
      @next = next
    end
  end

  class LinkedList
    attr_accessor :head
  
    def initialize
      @head = nil
    end
  end
  ```

2. Create a method on the Linked List class that appends a new node to the end of the list.

# [c] -next-> nil
# head -> [a] -next-> [b] -next-> nil 

Expected output 
# head -> [a] -next-> [b] -next-> [c] -next-> nil

        current = head
        while current.next
          current = current.next
        end
    
        current.next = node
      end
  ```

3. You can add this print method to your class to test your append method.

def print
       current = @head

       while current
           puts current.value
           current = current.next
       end
end