Issue9 (Create a QUnit test framework)

Added the framework to for creating test cases. All test cases will be made in the tests.js file.

Open qunit-testing.html to view the test results found in the tests.js file. Currently contain simple examples. 

The jQuery Api files were taken from: 

http://code.jquery.com/qunit/qunit-1.12.0.js
http://code.jquery.com/qunit/qunit-1.12.0.css

Let me know if this is the right approach or not :smiley: 

<a href="https://github.com/Pomax/DOM-diff/issues/9">Issue 9</a>