Merge pull request #2 from rust-lang/master

Merge pull request rust-lang#2092 from Aleru/master

src/appendix-04-useful-development-tools.md

@@ -1,10 +1,10 @@
-# Appendix D - Useful Development Tools
+## Appendix D - Useful Development Tools
 
 In this appendix, we talk about some useful development tools that the Rust
 project provides. We’ll look at automatic formatting, quick ways to apply
 warning fixes, a linter, and integrating with IDEs.
 
-## Automatic Formatting with `rustfmt`
+### Automatic Formatting with `rustfmt`
 
 The `rustfmt` tool reformats your code according to the community code style.
 Many collaborative projects use `rustfmt` to prevent arguments about which
@@ -29,7 +29,7 @@ on `rustfmt`, see [its documentation][rustfmt].
 
 [rustfmt]: /~https://github.com/rust-lang/rustfmt
 
-## Fix Your Code with `rustfix`
+### Fix Your Code with `rustfix`
 
 The rustfix tool is included with Rust installations and can automatically fix
 some compiler warnings. If you’ve written code in Rust, you’ve probably seen
@@ -96,7 +96,7 @@ The `for` loop variable is now named `_i`, and the warning no longer appears.
 You can also use the `cargo fix` command to transition your code between
 different Rust editions. Editions are covered in Appendix E.
 
-## More Lints with Clippy
+### More Lints with Clippy
 
 The Clippy tool is a collection of lints to analyze your code so you can catch
 common mistakes and improve your Rust code.
@@ -158,7 +158,7 @@ For more information on Clippy, see [its documentation][clippy].
 
 [clippy]: /~https://github.com/rust-lang/rust-clippy
 
-## IDE Integration Using the Rust Language Server
+### IDE Integration Using the Rust Language Server
 
 To help IDE integration, the Rust project distributes the *Rust Language
 Server* (`rls`). This tool speaks the [Language Server

src/appendix-05-editions.md

@@ -1,4 +1,4 @@
-# Appendix E - Editions
+## Appendix E - Editions
 
 In Chapter 1, you saw that `cargo new` adds a bit of metadata to your
 *Cargo.toml* file about an edition. This appendix talks about what that means!

src/appendix-07-nightly-rust.md

@@ -1,4 +1,4 @@
-# Appendix G - How Rust is Made and “Nightly Rust”
+## Appendix G - How Rust is Made and “Nightly Rust”
 
 This appendix is about how Rust is made and how that affects you as a Rust
 developer.

src/ch07-05-separating-modules-into-different-files.md

@@ -76,7 +76,7 @@ that module.
 
 ## Summary
 
-Rust lets you organize your packages into crates and your crates into modules
+Rust lets you split a package into multiple crates and a crate into modules
 so you can refer to items defined in one module from another module. You can do
 this by specifying absolute or relative paths. These paths can be brought into
 scope with a `use` statement so you can use a shorter path for multiple uses of