add github actions

.github/workflows/common-coverage.yml

@@ -0,0 +1,19 @@
+name: common-coverage
+on: [push]
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+
+      - uses: actions/checkout@v1
+      - run: npm install
+      - run: npm run coverage
+      - run: npm run coveralls
+
+      - name: Post coverage data to coveralls.io for analysis
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/common-lint.yml

@@ -0,0 +1,15 @@
+name: common-lint
+on: [push]
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+
+      - uses: actions/checkout@v1
+      - run: npm install
+      - run: npm run lint
+        env:
+          CI: true

.github/workflows/common-test.yml

@@ -0,0 +1,20 @@
+name: common-test
+on: [push]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [8.x, 10.x, 12.x, 13.x]
+
+    steps:
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - uses: actions/checkout@v1
+      - run: npm install
+      - run: npm test
+        env:
+          CI: true

README.md

@@ -1,6 +1,7 @@
 # SYNOPSIS
 
 [![Build Status](https://travis-ci.org/ethereumjs/ethereumjs-common.svg?branch=master)](https://travis-ci.org/ethereumjs/ethereumjs-common)
+[![Actions Status](https://github.com/ethereumjs/ethereumjs-common/workflows/common-test/badge.svg)](https://github.com/ethereumjs/ethereumjs-common/actions)
 [![Coverage Status](https://img.shields.io/coveralls/ethereumjs/ethereumjs-common.svg?style=flat-square)](https://coveralls.io/r/ethereumjs/ethereumjs-common)
 [![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)
 [![Gitter](https://img.shields.io/gitter/room/ethereum/ethereumjs.svg?style=flat-square)]()