message: chore(travis): check for doc directory before building extra docs
diff: @@ -6,14 +6,17 @@ shopt -s globstar
  cargo doc --no-deps
  -for f in ./doc/**/*.md; do
  +if [ -d ./doc ]; then
  + for f in $(find ./doc/**/*.md); do
  rustdoc $f -L ./target/debug -L ./target/debug/deps -o "$(dirname $f)" --html-before-content=./doc/prelude.html.inc --html-after-content=./doc/postlude.html.inc --markdown-css=guide.css;
  done
  cp --parent ./doc/**/*.html ./target
  cp ./doc/guide.css ./target/doc/guide/guide.css
  +fi
  -git clone --branch gh-pages "https://$TOKEN@github.com/${TRAVIS_REPO_SLUG}.git" deploy_docs > /dev/null 2>&1
  +git clone --branch gh-pages "git@github.com:${TRAVIS_REPO_SLUG}.git" deploy_docs > /dev/null 2>&1
  +#git clone --branch gh-pages "https://$TOKEN@github.com/${TRAVIS_REPO_SLUG}.git" deploy_docs > /dev/null 2>&1
  cd deploy_docs
  git config user.name "Sean McArthur"
  