Added macOS and Windows builds to GitHub Actions

Author: OnePatchGuy

.github/workflows/ci.yml

@@ -0,0 +1,79 @@
+name: CI
+on: [push]
+jobs:
+
+  ubuntu-build:
+    name: Ubuntu build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Go 1.12
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.12
+        id: go
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v1
+
+      - name: Get dependencies
+        run: |
+          go get -v -t -d ./...
+          if [ -f Gopkg.toml ]; then
+              curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
+              dep ensure
+          fi
+
+      - name: Build
+        run: go build -v -i -o cstest .
+
+      - name: Running the tests
+        run: ./cstest -help
+
+  windows-build:
+    name: Windows build
+    runs-on: windows-latest
+    steps:
+      - name: Set up Go 1.12
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.12
+        id: go
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v1
+
+      - name: Get dependencies
+        run: echo stub
+
+      - name: Build
+        run: go build -v -i -o cstest.exe .
+
+      - name: Running the tests
+        run: cstest.exe -help
+
+  macOS-build:
+    name: MacOS build
+    runs-on: macOS-latest
+    steps:
+      - name: Set up Go 1.12
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.12
+        id: go
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v1
+
+      - name: Get dependencies
+        run: |
+          go get -v -t -d ./...
+          if [ -f Gopkg.toml ]; then
+              curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
+              dep ensure
+          fi
+
+      - name: Build
+        run: go build -v -i -o cstest .
+
+      - name: Running the tests
+        run: ./cstest -help