Port TRPL to mdbook

1. move everything under a src directory
2. add README.md to the SUMMARY.md

Author: steveklabnik

src/doc/book/SUMMARY.md

@@ -1,4 +1,4 @@
-% The Rust Programming Language
+# The Rust Programming Language
 
 Welcome! This book will teach you about the [Rust Programming Language][rust].
 Rust is a systems programming language focused on three goals: safety, speed,

src/doc/book/README.md renamed to src/doc/book/src/README.md

@@ -1,3 +1,72 @@
 # Summary
 
-- [Chapter 1](./chapter_1.md)
+[Introduction](README.md)
+
+* [Getting Started](getting-started.md)
+* [Tutorial: Guessing Game](guessing-game.md)
+* [Syntax and Semantics](syntax-and-semantics.md)
+    * [Variable Bindings](variable-bindings.md)
+    * [Functions](functions.md)
+    * [Primitive Types](primitive-types.md)
+    * [Comments](comments.md)
+    * [if](if.md)
+    * [Loops](loops.md)
+    * [Vectors](vectors.md)
+    * [Ownership](ownership.md)
+    * [References and Borrowing](references-and-borrowing.md)
+    * [Lifetimes](lifetimes.md)
+    * [Mutability](mutability.md)
+    * [Structs](structs.md)
+    * [Enums](enums.md)
+    * [Match](match.md)
+    * [Patterns](patterns.md)
+    * [Method Syntax](method-syntax.md)
+    * [Strings](strings.md)
+    * [Generics](generics.md)
+    * [Traits](traits.md)
+    * [Drop](drop.md)
+    * [if let](if-let.md)
+    * [Trait Objects](trait-objects.md)
+    * [Closures](closures.md)
+    * [Universal Function Call Syntax](ufcs.md)
+    * [Crates and Modules](crates-and-modules.md)
+    * [`const` and `static`](const-and-static.md)
+    * [Attributes](attributes.md)
+    * [`type` aliases](type-aliases.md)
+    * [Casting between types](casting-between-types.md)
+    * [Associated Types](associated-types.md)
+    * [Unsized Types](unsized-types.md)
+    * [Operators and Overloading](operators-and-overloading.md)
+    * [Deref coercions](deref-coercions.md)
+    * [Macros](macros.md)
+    * [Raw Pointers](raw-pointers.md)
+    * [`unsafe`](unsafe.md)
+* [Effective Rust](effective-rust.md)
+    * [The Stack and the Heap](the-stack-and-the-heap.md)
+    * [Testing](testing.md)
+    * [Conditional Compilation](conditional-compilation.md)
+    * [Documentation](documentation.md)
+    * [Iterators](iterators.md)
+    * [Concurrency](concurrency.md)
+    * [Error Handling](error-handling.md)
+    * [Choosing your Guarantees](choosing-your-guarantees.md)
+    * [FFI](ffi.md)
+    * [Borrow and AsRef](borrow-and-asref.md)
+    * [Release Channels](release-channels.md)
+    * [Using Rust without the standard library](using-rust-without-the-standard-library.md)
+    * [Procedural Macros (and custom derive)](procedural-macros.md)
+* [Nightly Rust](nightly-rust.md)
+    * [Compiler Plugins](compiler-plugins.md)
+    * [Inline Assembly](inline-assembly.md)
+    * [No stdlib](no-stdlib.md)
+    * [Intrinsics](intrinsics.md)
+    * [Lang items](lang-items.md)
+    * [Advanced linking](advanced-linking.md)
+    * [Benchmark Tests](benchmark-tests.md)
+    * [Box Syntax and Patterns](box-syntax-and-patterns.md)
+    * [Slice Patterns](slice-patterns.md)
+    * [Associated Constants](associated-constants.md)
+    * [Custom Allocators](custom-allocators.md)
+* [Glossary](glossary.md)
+* [Syntax Index](syntax-index.md)
+* [Bibliography](bibliography.md)

src/doc/book/src/SUMMARY.md

@@ -1,4 +1,4 @@
-% Advanced Linking
+# Advanced Linking
 
 The common cases of linking with Rust have been covered earlier in this book,
 but supporting the range of linking possibilities made available by other

src/doc/book/advanced-linking.md renamed to src/doc/book/src/advanced-linking.md

@@ -1,4 +1,4 @@
-% Associated Constants
+# Associated Constants
 
 With the `associated_consts` feature, you can define constants like this:
 

src/doc/book/associated-constants.md renamed to src/doc/book/src/associated-constants.md

@@ -1,4 +1,4 @@
-% Associated Types
+# Associated Types
 
 Associated types are a powerful part of Rust’s type system. They’re related to
 the idea of a ‘type family’, in other words, grouping multiple types together. That

src/doc/book/associated-types.md renamed to src/doc/book/src/associated-types.md

@@ -1,4 +1,4 @@
-% Attributes
+# Attributes
 
 Declarations can be annotated with ‘attributes’ in Rust. They look like this:
 

src/doc/book/attributes.md renamed to src/doc/book/src/attributes.md

@@ -1,4 +1,4 @@
-% Benchmark tests
+# Benchmark tests
 
 Rust supports benchmark tests, which can test the performance of your
 code. Let's make our `src/lib.rs` look like this (comments elided):

src/doc/book/benchmark-tests.md renamed to src/doc/book/src/benchmark-tests.md

@@ -1,4 +1,4 @@
-% Bibliography
+# Bibliography
 
 This is a reading list of material relevant to Rust. It includes prior
 research that has - at one time or another - influenced the design of

src/doc/book/bibliography.md renamed to src/doc/book/src/bibliography.md

@@ -1,4 +1,4 @@
-% Borrow and AsRef
+# Borrow and AsRef
 
 The [`Borrow`][borrow] and [`AsRef`][asref] traits are very similar, but
 different. Here’s a quick refresher on what these two traits mean.