Migrate CI to Github Actions. (#225)

* Migrate CI to Github Actions

Co-authored-by: louyuting <[email protected]>

.github/workflows/go.yml

@@ -0,0 +1,38 @@
+name: CI
+
+on:
+  pull_request:
+    branches: "*"
+
+jobs:
+
+  build:
+    name: ubuntu-latest ${{ matrix.config.go_version }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        config:
+          - go_version: 1.13
+          - go_version: 1.14
+    steps:
+
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v2
+      with:
+        go-version: ${{ matrix.config.go_version }}
+      id: go
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: Install goimports
+      run: go get golang.org/x/tools/cmd/goimports
+
+    - name: Test
+      run: |
+        diff -u <(echo -n) <(gofmt -d -s .)
+        diff -u <(echo -n) <(goimports -d .)
+        go test -v -race ./... -coverprofile=coverage.txt -covermode=atomic
+    
+    - name: Coverage
+      run: bash <(curl -s https://codecov.io/bash)