This is the exercise for week 2 day 3.

1. Read about unit testing at the following links: * http://en.wikipedia.org/wiki/Test-driven_development * http://www.extremeprogramming.org/rules/unittests.html
2. Fork this repository and clone your fork
3. cd into the linked-list-cohort3 folder on your computer
4. Run rake to run the test suite
5. Make the test suite pass by implementing the LinkedList and LinkedListItem classes * Choose one test at a time to work on * Once the tests pass, you should refactor and clean up your code
6. Push your implementation up to github as you work on it.

The tests for the project are in the /tests directory.

The stubbed classes that you are to implement are in the /lib directory.

I have numbered the unit tests to give you a hint at the easiest implementation order.