Add github actions workflow

.github/workflows/.editorconfig

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+[*.yml]
+indent_size = 2

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 10
+      matrix:
+        go: ['1.11', '1.12', '1.13']
+    env:
+      VERBOSE: 1
+      GOFLAGS: -mod=readonly
+      GOPROXY: https://proxy.golang.org
+
+    steps:
+      - name: Set up Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: Checkout code
+        uses: actions/checkout@v1
+
+      - name: Run tests
+        run: make test
+
+      - name: Run linter
+        run: make lint