added github actions

Author: DaniAkash

.github/workflows/nodejs.yml

@@ -0,0 +1,50 @@
+name: build
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - "!*" # Do not execute on tags
+    paths:
+      - src/*
+      - test/*
+      - __tests__/*
+      - "*.json"
+      - yarn.lock
+      - .github/**/*.yml
+  pull_request:
+    paths:
+      - "!*.MD"
+jobs:
+  test:
+    strategy:
+      matrix:
+        platform: [ubuntu-latest, macOS-latest]
+        node: ["12", "10"]
+    name: test/node ${{ matrix.node }}/${{ matrix.platform }}
+    runs-on: ${{ matrix.platform }}
+    steps:
+      - uses: actions/checkout@master
+      - uses: actions/setup-node@master
+        with:
+          node-version: ${{ matrix.node }}
+      - run: npm install -g yarn
+      - run: yarn install
+      - run: yarn test
+  coverage:
+    needs: [test]
+    name: coverage
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - uses: actions/setup-node@master
+        with:
+          node-version: "12"
+      - run: npm install -g yarn
+      - run: yarn install
+      - uses: paambaati/codeclimate-action@v2.5.3
+        env:
+          CC_TEST_REPORTER_ID: ${{secrets.CC_TEST_REPORTER_ID}}
+        with:
+          coverageCommand: yarn coverage
+          debug: true