Give the example a look. Feel free to use the wrapper or just the techniques contained therein.
Let me give you the good news first, and then I will add my comments/queries/questions later either editing this post or in a new post.
I downloaded the zip file of your Library and have included in the IDE. I have executed the example of the Library in the following setup of 2xDS18B20 sensors; it has fantastically worked; particularly, the Serial Monitor Display is appealing. Thanks+ for the good job.