Add tests, scope methods to GADissect object, remove jQuery dependency

This also includes some refactoring and the removal of Bundler in favour of NPM.
Refactor to pass JSHint

* Use dot notation for properties object
* Use === instead of == for empty string comparison
* Add the radix parameter to parseInt()
Update minified script
Refactor parseCookieFragment, add emptyValue property
Return an empty string by default, ensure numVisits returns a number
Merge pull request #1 from Aupajo/master

Add tests, scope methods to GADissect object, remove jQuery dependency