Deploy to gh-pages using Travis CI

.travis.yml

@@ -0,0 +1,17 @@
+language: ruby
+branches:
+    only:
+        - master
+script:
+    - git clone https://github.com/asciidoctor/asciidoctor.git
+    - cd asciidoctor
+    - bundle install
+    - cd ..
+    - pwd
+    - mkdir build
+    - asciidoctor/bin/asciidoctor main.asciidoc -o build/index.html
+deploy:
+    provider: pages:git
+    token: $GITHUB_TOKEN
+    edge: true
+    local_dir: build/

README.md

@@ -1,9 +1,12 @@
 # 自作ISAのためのLLVMバックエンドを書く薄い本（予定）
 
 <a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/80x15.png" /></a>
+[![Build Status](https://travis-ci.org/ushitora-anqou/write-your-llvm-backend.svg?branch=master)](https://travis-ci.org/ushitora-anqou/write-your-llvm-backend)
 
 別に売る気はない。鋭意執筆中。
 
+[ここからmasterが読めます。](https://ushitora-anqou.github.io/write-your-llvm-backend/)
+
 ## Author
 
 [艮 鮟鱇（うしとら あんこう／Ushitora Anqou）](https://anqou.net/)