Add a check to the taking of a fruit

If either player has more then half of the fruits in the category, they have already won, no point collecting, example:
If there are 5 melons, and opponent has 3, then don't pick up melon as there is no way that could benefit you.
Update salesbot-3.0.js
Update salesbot-3.0.js
Merge pull request #1 from AnonTakesOver/patch-1

Add a check to the taking of a fruit.