first try on automatic Doc building.

Author: Andre601

.github/workflows/build_docs.yml

@@ -0,0 +1,38 @@
+name: Building Documentation
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - 'wiki/**'
+      - '!wiki/README.md'
+
+jobs:
+  build_wiki:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup Python 3.7
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.7
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip setuptools
+        python -m pip install -r requirements.txt
+    - name: Build pages
+      working-directory: './wiki'
+      run: |
+        mkdocs build
+  build_javadoc:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup Java 8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+    - name: Build Javadoc
+      run: |
+        ./gradlew javadoc