Merge pull request #18 from xyb/autodoc

using github actions to build documentation

.github/workflows/main.yml

@@ -0,0 +1,62 @@
+name: website
+
+#on: [push]
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v1
+      - name: Set output
+        id: vars
+        run: echo ::set-output name=tag::${GITHUB_REF:10}
+      - name: Cache choosenim
+        id: cache-choosenim
+        uses: actions/cache@v1
+        with:
+          path: ~/.choosenim
+          key: ${{ runner.os }}-choosenim-stable
+      - name: Cache nimble
+        id: cache-nimble
+        uses: actions/cache@v1
+        with:
+          path: ~/.nimble
+          key: ${{ runner.os }}-nimble-stable
+      - uses: jiro4989/setup-nim-action@v1.0.2
+        with:
+          nim-version: 'stable'
+      - name: Install libsnappy
+        run: sudo apt-get install libsnappy1v5
+      - name: Install leveldb c library
+        run: |
+          wget http://ftp.us.debian.org/debian/pool/main/l/leveldb/libleveldb1d_1.22-3_amd64.deb
+          wget http://ftp.us.debian.org/debian/pool/main/l/leveldb/libleveldb-dev_1.22-3_amd64.deb
+          sudo dpkg -i *.deb
+      -
+        name: Build
+        env:
+          RELEASE_VERSION: ${{ steps.vars.outputs.tag }}
+        run: |
+          nimble build -Y
+          nimble test -Y
+          nimble doc --project --git.url:https://github.com/$GITHUB_REPOSITORY src/leveldb.nim --git.commit:$RELEASE_VERSION
+          mkdir -p ./public
+          mv src/htmldocs/* ./public/
+          cd ./public/
+          ln -s ./leveldb.html index.html
+          cd ../
+      -
+        name: Deploy
+        if: success()
+        uses: crazy-max/ghaction-github-pages@v1.3.0
+        with:
+          target_branch: gh-pages
+          build_dir: ./public
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}