Setup CI via Actions

.github/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: git2go CI
+on:
+  pull_request:
+  push:
+    branches:
+    - master
+    - v*
+
+jobs:
+
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        go: [ '1.9', '1.10', '1.11', '1.12' ]
+    name: Go ${{ matrix.go }}
+
+    runs-on: ubuntu-18.04
+
+    steps:
+    - name: Set up Go
+      uses: actions/setup-go@v1
+      with:
+        go-version: ${{ matrix.go }}
+      id: go
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v1
+    - name: Build
+      run: make test-static