Code Review Changes

Comment	Adjustment
The package `com.danilafe.fencelessgrazing` can be changed to something more relevant.	Package name follows standard conventions of reverse domain name. No changes made.
(General remark) commenting is sparse.	Every function and field in the codebase documented using KDoc; documentation intermittently updated on student website.
No unit tests	Not worth it to do UI tests; cow description language developed for testing databases elsewhere.
Missing README.	README added with compilation instructions; gradle wrapper adjusted to work out of the box.