There are no code examples because Material is not a framework. Material is the document itself, describing how things should look on Google products, and why.
But this document inspired a lot of frameworks already. Some simple research should give you lots of tools like Materialize (I did not test this properly).
The only lib from Google itself I could find is Material Design Lite. I've tried it a little. The results are absolutely Gorgeous, but the classes itself are too verbose for my taste and it seemed waaaay harder to customize. If you're interested, I have a code example in my github account.
Conclusion: if you like Bootstrap, don't need to worry about it getting outclassed. Bootstrap is great and is not going anywhere (for a while). But do read the Material documents. They are a great source of wisdom about interfaces and usability.