Convert to Go modules

Author: davecheney

.github/workflows/push.yml

@@ -0,0 +1,19 @@
+on:
+  push:
+    branches:
+    - master
+name: Push Event
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go: [ '1.15' ]
+    name: Go ${{ matrix.go }} test
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup go
+        uses: actions/setup-go@v1
+        with:
+          go-version: ${{ matrix.go }}
+      - run: go test -v ./...

go.mod

@@ -0,0 +1,3 @@
+module github.com/pkg/browser
+
+go 1.14