Add GitHub Actions config

.github/workflows/ci.yml

@@ -0,0 +1,22 @@
+on: [push, pull_request]
+name: CI
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.16.x
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Test
+      run: go test ./...
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: latest

.travis.yml

@@ -1,10 +0,0 @@
-language: go
-go:
-  - 1.6.2
-  - tip
-
-sudo: false
-
-matrix:
-  allow_failures:
-    - go: tip