v1.2.0

This repo is cloned from https://github.com/jpfuentes2/php-activerecord
And this is the first release here.

So, I kept the source code and the version number same, so other developers and contributors of the original source code does not get confused with version number of this new repo.

Again: This source code version is same as v1.2.0 on https://github.com/jpfuentes2/php-activerecord