Use vendor when building (#201)

* Use vendor code for all go calls

* Add missing vendor dependencies

* Add travis_retry to yarn install

* Fix go test call

vendor/github.com/99designs/gqlgen/cmd/gen.go

@@ -0,0 +1,44 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/99designs/gqlgen/api"
+	"github.com/99designs/gqlgen/codegen/config"
+	"github.com/pkg/errors"
+	"github.com/urfave/cli"
+)
+
+var genCmd = cli.Command{
+	Name:  "generate",
+	Usage: "generate a graphql server based on schema",
+	Flags: []cli.Flag{
+		cli.BoolFlag{Name: "verbose, v", Usage: "show logs"},
+		cli.StringFlag{Name: "config, c", Usage: "the config filename"},
+	},
+	Action: func(ctx *cli.Context) {
+		var cfg *config.Config
+		var err error
+		if configFilename := ctx.String("config"); configFilename != "" {
+			cfg, err = config.LoadConfig(configFilename)
+			if err != nil {
+				fmt.Fprintln(os.Stderr, err.Error())
+				os.Exit(1)
+			}
+		} else {
+			cfg, err = config.LoadConfigFromDefaultLocations()
+			if os.IsNotExist(errors.Cause(err)) {
+				cfg = config.DefaultConfig()
+			} else if err != nil {
+				fmt.Fprintln(os.Stderr, err.Error())
+				os.Exit(2)
+			}
+		}
+
+		if err = api.Generate(cfg); err != nil {
+			fmt.Fprintln(os.Stderr, err.Error())
+			os.Exit(3)
+		}
+	},
+}