message: Add mdbook github action
diff: @@ -35,3 +35,13 @@ jobs:
  RUSTFLAGS: -D warnings
  run: |
  cargo doc --all --all-features
  + book:
  + runs-on: ubuntu-latest
  + steps:
  + - uses: actions/checkout@master
  + - name: Install mdbook
  + run: |
  + sudo snap install mdbook
  + - name: Run mdbook
  + run: |
  + cd book && mdbook build
  