Hello, world.

.gitignore

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+book/

README.md

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+# The Rust Programming Language
+
+This is the next iteration of “The Rust Programming Language”, which is
+currently located [in the main Rust repository][src]. If you want to read the
+book, you should check it out there or [on the web][prod].
+
+[src]: https://github.com/rust-lang/rust/tree/master/src/doc/book
+[prod]: https://doc.rust-lang.org/book/
+
+## Requirements
+
+Building the book requires [mdBook]. To get it:
+
+[mdBook]: https://doc.rust-lang.org/book/
+
+```bash
+$ cargo install mdbook
+```
+
+## Building
+
+To build the book, type:
+
+```bash
+$ mdbook build
+```
+
+The output will be in the `book` subdirectory. To check it out, open it in
+your web browser:
+
+```bash
+$ firefox book/index.html
+```
+
+## Contributing
+
+I’m not going to be accepting major changes at first, but pull requests to fix
+typos and such are welcome. Please file any issues for discussion of larger
+changes.
+
+This repository is under the same license as Rust itself, MIT/Apache2.

src/SUMMARY.md

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+# The Rust Programming Language
+
+- [Hello, world!](hello-world.md)

src/hello-world.md

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+# Hello, world
+
+This will be a real book soon!