change test task

I have change the command `grunt test`, now it create a server on http://localhost:8000, validate by jshint, run jasmine and watch scripts changes. Furthermore it create a output test file in jstest folder called SpecRunner.html. 

So if you open in browser http://localhost:8000/jstest/SpecRunner.html you can see the jasmine browser version while command is running. Probably now don`t works because test fail and grunt task is interrupted, for avoid this you can use the command `grunt test --force`.