Prefixing all Sprinkles related objects and methods with "$"

Monkey patching is bad. So Date.prototype.endOfDay should probably not
be set because someone else down the line may write to the same
method. But if we put a "$" in front of it, then we're gauranteed not
to clash. Same thing goes for new globals like $cookies.
Updating README to feature new prefixed methods; moving cookies

It made more sense for $cookies to live on Document instead of the
global namespace. I updated that and also updated the other methods
referenced in the README.
Modifying grunt to add version number to builds
Adding required semicolons to cookies_test.js
Bumping version to 1.0.0
Updating dist files