Auto merge of #4904 - alexcrichton:clean-docs, r=alexcrichton

Delete the old docs, lift up the new

This commit deletes the old documentation now that the "official source" is the
main book. The book is now lifted up directly into `src/doc` instead of
`src/doc/book`.

The CI no longer builds documentation and has been updated to just run mdbook to
make sure there's no errors. The documentation will actually get published in
the rust-lang/rust repo

Author: bors

.travis.yml

@@ -34,14 +34,7 @@ matrix:
       script:
         - cargo test
         - cargo doc --no-deps
-        - sh src/ci/dox.sh
-      after_success: |
-        [ $TRAVIS_BRANCH = master ] &&
-        [ $TRAVIS_PULL_REQUEST = false ] &&
-        [ $(uname -s) = Linux ] &&
-        pip install ghp-import --user &&
-        $HOME/.local/bin/ghp-import -n target/doc &&
-        git push -qf https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git gh-pages 2>&1 >/dev/null
+        - (cd src/doc && mdbook build --no-create --dest-dir ../../target/doc)
 
   exclude:
     - rust: stable
@@ -51,13 +44,10 @@ before_script:
 script:
   - cargo test
 
-env:
-  global:
-    - secure: "hWheSLilMM4DXChfSy2XsDlLw338X2o+fw8bE590xxU2TzngFW8GUfq7lGfZEp/l4SNNIS6ROU/igyttCZtxZMANZ4aMQZR5E8Fp4yPOyE1pZLDH/LdQVXnROsfburQJeq+GIYIbZ01Abzh5ClpgLg5KX0H627uj063zZ7Ljo/w="
-
 notifications:
   email:
     on_success: never
+
 addons:
   apt:
     packages:

src/ci/dox.sh

@@ -1,6 +1,47 @@
-# Cargo Documentation
+# The Cargo Book
 
-NOTE: Cargo documentation is under migration to mdBook-based structure. All the
-`*.md` files here shall be kept in sync with the `*.md` files under `book/src/`.
-See `MIGRATION_MAP` file here and <https://github.com/rust-lang/cargo/pull/4453>
-for details.
+
+### Requirements
+
+Building the book requires [mdBook]. To get it:
+
+[mdBook]: https://github.com/azerupi/mdBook
+
+```shell
+$ cargo install mdbook
+```
+
+### Building
+
+To build the book:
+
+```shell
+$ mdbook build
+```
+
+The output will be in the `book` subdirectory. To check it out, open it in
+your web browser.
+
+_Firefox:_
+```shell
+$ firefox book/index.html                       # Linux
+$ open -a "Firefox" book/index.html             # OS X
+$ Start-Process "firefox.exe" .\book\index.html # Windows (PowerShell)
+$ start firefox.exe .\book\index.html           # Windows (Cmd)
+```
+
+_Chrome:_
+```shell
+$ google-chrome book/index.html                 # Linux
+$ open -a "Google Chrome" book/index.html       # OS X
+$ Start-Process "chrome.exe" .\book\index.html  # Windows (PowerShell)
+$ start chrome.exe .\book\index.html            # Windows (Cmd)
+```
+
+
+## Contributing
+
+Given that the book is still in a draft state, we'd love your help! Please feel free to open
+issues about anything, and send in PRs for things you'd like to fix or change. If your change is
+large, please open an issue first, so we can make sure that it's something we'd accept before you
+go through the work of getting a PR together.