Third assignment

Given in 28th Oct 2014, to be returned by 18th Nov 2014

Extend your existing project which was started in the first assignment and continued further in the second assignment.

Use the automated tests done in the second assignment and add code coverage testing on them. Push the results to Coveralls.io and display the results in your projects README.md.

Once the tests and coverage results appear, increase the test coverage percentage by adding unit tests to your project. The code coverage should be over 90% when returning this assignment.

This assignment is evaluated by a successful installation of Coveralls.io service to the given project. The history shown at Coveralls.io for the project should show an increase in the test coverage percentage.

Once the assignment is considered to be complete, tag it with v0.3.0.