if this works, it will be a miracle

.travis.yml

@@ -0,0 +1,14 @@
+language: r
+cache: packages
+sudo: false
+before_script:
+- chmod +x ./_build.sh
+- chmod +x ./_deploy.sh
+script:
+- ./_build.sh
+after_success:
+- test $TRAVIS_PULL_REQUEST == "false" && test $TRAVIS_BRANCH == "master" && bash
+  _deploy.sh
+env:
+  global:
+    secure: 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

16_more-content.Rmd

@@ -2,4 +2,4 @@
 
 # More content
 
-more stuff *coming soon* ... really!
+more stuff *coming soon* ... really!!

_build.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env Rscript
+
+bookdown::render_book("index.Rmd", "bookdown::gitbook")
+bookdown::render_book("index.Rmd", "bookdown::pdf_book")

_deploy.sh

@@ -0,0 +1,19 @@
+# Set git config information
+git config --global user.name "Jenny Bryan (Travis-CI)"
+git config --global user.email "jenny@stat.ubc.ca"
+
+# Clone the gh-pages repository
+git clone -b gh-pages \
+  https://${HAPPY_GIT}@github.com/${TRAVIS_REPO_SLUG}.git \
+  book-output
+
+# Change to the gh-page clone book-output directory
+cd book-output
+
+# Copy generated output to book-output
+cp -r ../_book/* ./
+
+# Add all files to the repo
+git add *
+git commit -a -m "Updating book (${TRAVIS_BUILD_NUMBER})"
+git push origin gh-pages