Merge pull request #1000 from docsifyjs/github-action-ci

chore: added github Actions for CI

.github/workflows/CI.yml

@@ -0,0 +1,33 @@
+name: Testing the e2e test suites
+
+on: 
+  push:
+   branches:
+    - master
+    - develop
+  pull_request:
+   branches:
+    - master
+    - develop
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [8.x, 10.x, 12.x]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name:  bootstrap
+      run: npm run bootstrap
+    - name: Build
+      run: npm run build
+    - name: linting
+      run: npm run lint
+    - name: end to end
+      run: npm run test:e2e