Started working on tests

This adds the basic test files and four tests for the configuration
that will eventually be used to build the new Select2.  The tests
will be run using QUnit through grunt tasks.

The almond.js AMD loader has been included in the project for those
who do not already have an AMD loader.  Select2 will require an
AMD loader and almond.js appeared to be the smallest available.

The jQuery library has been included for those who do not already
have the library in the project.