Added some books and resources

[nzec]

• Hypervisor, OS tutorial
• Ferrous Systems books
• Atomics and Locks
• Rust for Rustaceans

Please feel free to squash the commits

[glyn]

Thanks for these suggestions. Please see my review comments.

[nzec]

@glyn I have made the changes. I also sorted the unofficial book list alphabetically. I kept that as a separate commit so that the git history is cleaner.

[glyn]

Some more italics need adding.

[nzec]

Did the changes @glyn

[glyn]

Another alphanumeric ordering issue.

Shall we get the current set of changes correct and merged and leave others for a future PR?

[glyn]

Thanks for making the changes. For future reference, I would prefer PR scope to be stable after submission. If you find changes, other than response to my review, you'd like to make, please submit a separate PR. This will help me get your PRs merged quickly. The same approach applies in many projects, which is why I point it out. Cheers.

[nzec]

@glyn I apologize for the long back and forth. The convention for italics could be mentioned in the README.md itself.

The categorization could also be made better and less confusing. Some of the books in unofficial.md could be moved to applications.md. I'd send a patch if it makes sense.

[glyn]

@glyn I apologize for the long back and forth. The convention for italics could be mentioned in the README.md itself.

Good idea. See #92.

The categorization could also be made better and less confusing. Some of the books in unofficial.md could be moved to applications.md. I'd send a patch if it makes sense.

Ok. If you are unsure, please start a discussion thread or send a draft PR.