Cleanup Readme links and Grunt 0.4 syntax

- Fixed redirected Sauce Docs
- Changed to `grunt-contrib-qunit` repo since it replaced the old qunit task
- Updated registerTask samples to use Array syntax

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The section "Here is an __example__ `grunt.js` file - [https://gist.github.com/4061787](https://gist.github.com/4061787)." still needs to be changed, but the a 0.4 gist will need to be created.