Update site to use mdBook instead of deprecated GitBook

.gitignore

@@ -1,2 +1 @@
-/_book/
-/node_modules/
+book

.gitlab-ci.yml

@@ -1,33 +1,21 @@
-# requiring the environment of NodeJS 8.9.x LTS (carbon)
-image: node:10
+stages:
+    - deploy
 
-# add 'node_modules' to cache for speeding up builds
-cache:
-  paths:
-    - node_modules/ # Node modules and dependencies
-
-before_script:
-  - npm install gitbook-cli -g # install gitbook
-  - gitbook fetch 3.2.3 # fetch latest stable version
-  - gitbook install # add any requested plugins in book.json
-
-test:
-  stage: test
-  script:
-    - gitbook build . public # build to public path
-  only:
-    - branches # this job will affect only the 'master' branch
-  except:
-    - master
-    
-# the 'pages' job will deploy and build your site to the 'public' path
 pages:
   stage: deploy
+  image: rust:latest
+  variables:
+    CARGO_HOME: $CI_PROJECT_DIR/cargo
+  before_script:
+    - export PATH="$PATH:$CARGO_HOME/bin"
+    - mdbook --version || cargo install --debug mdbook
   script:
-    - gitbook build . public # build to public path
-  artifacts:
-    paths:
-      - public
-    expire_in: 1 week
+        - mdbook build -d public
   only:
-    - master # this job will affect only the 'master' branch
+      - master 
+  artifacts:
+      paths:
+          - public
+  cache:
+    paths:
+    - $CARGO_HOME/bin

README.md

@@ -1,8 +1,6 @@
 # Introduction
 The following is a dump of Git commands for use on your shell of choice.
 
-This book is [generated with GitBook](https://github.com/GitbookIO/gitbook) and hosted by [GitLab Pages](https://gitlab.com/strivinglife/book-git-commands).
+This book is [generated with mdBook](mdbook) and hosted by [GitLab Pages](https://gitlab.com/strivinglife/book-git-commands).
 
-If you'd like to setup your own book, I'd recommend taking a look at [this example repository](https://gitlab.com/pages/gitbook) and [the official book's code](https://github.com/GitbookIO/gitbook/tree/master/docs).
-
-The book can be served locally by running `gitbook serve`.
+The book can be served locally by running `mdbook serve`.

book.json

@@ -1,3 +0,0 @@
-{
-	"author": "James Skemp"
-}

book.toml

@@ -0,0 +1,6 @@
+[book]
+authors = ["James Skemp"]
+language = "en"
+multilingual = false
+src = "src"
+title = "Git Commands by James Skemp"

src/SUMMARY.md

@@ -1,9 +1,9 @@
 # Summary
 
-* [Introduction](README.md)
+* [Introduction](introduction.md)
 * [Notes and warnings](notes.md)
 * [Getting Started](getting-started.md)
-* Configuration
+* [Configuration](configuration.md)
 	* [User information](configuration/user.md)
 	* [Git configuration](configuration/git.md)
 	* [Repository information](configuration/repository.md)
@@ -15,10 +15,10 @@
 * [Tags](tags.md)
 * [Logging](logging.md)
 
-### Examples
+## Examples
 * [Updating a fork](example/update-fork.md)
 * [Create a new repo from a subdirectory](example/create-new-repo-from-subdirectory.md)
 
---
+## Related
 
 * [Related links](related.md)

src/configuration.md

@@ -0,0 +1,6 @@
+# Configuration
+The following sections covers general configuration and information.
+
+* [User information](configuration/user.md)
+* [Git configuration](configuration/git.md)
+* [Repository information](configuration/repository.md)

src/introduction.md

@@ -0,0 +1,6 @@
+# Introduction
+The following is a dump of Git commands for use on your shell of choice.
+
+This book is [generated with mdBook](mdbook) and hosted by [GitLab Pages](https://gitlab.com/strivinglife/book-git-commands).
+
+The book can be served locally by running `mdbook serve`.