Merge pull request 'Create main.go CLI entry point at cmd/testbed2/main.go' (#10) from issue-6-main-cli into scaffold-go-cli

cmd/testbed2/main.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/marmaduke/testbed2/pkg/cli"
+)
+
+func main() {
+	if err := cli.Run(os.Args[1:]); err != nil {
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
+}

pkg/cli/cli_test.go

@@ -48,13 +48,13 @@ func TestRunOutput(t *testing.T) {
 	r, w, _ := os.Pipe()
 	os.Stdout = w
 
-	Run([]string{})
+	_ = Run([]string{})
 
 	w.Close()
 	os.Stdout = oldStdout
 
 	buf := new(bytes.Buffer)
-	buf.ReadFrom(r)
+	_, _ = buf.ReadFrom(r)
 	if buf.Len() == 0 {
 		t.Fatal("expected output")
 	}