fix cligen command

Author: ikehara

cmd/abigen/README.md

@@ -53,7 +53,7 @@ func Generate(outdir, pkg, name, abiJsonFilename string, mock bool) error {
 func init() {
 	rootCmd.Flags().String("package", "contract", "package name")
 	rootCmd.Flags().String("name", "", "contract name")
-	rootCmd.Flags().String("abi", "example.json", "abi json")
+	rootCmd.Flags().String("abi", "", "abi json")
 	rootCmd.Flags().String("outdir", "", "output dir")
 	rootCmd.Flags().Bool("mock", false, "generate mock")
 	viper.AutomaticEnv()

cmd/abigen/main.go

@@ -59,7 +59,7 @@ func Generate(outdir, pkg, name, abiJsonFilename string) error {
 func init() {
 	rootCmd.Flags().String("package", "contract", "package name")
 	rootCmd.Flags().String("name", "", "contract name")
-	rootCmd.Flags().String("abi", "example.json", "abi json")
+	rootCmd.Flags().String("abi", "", "abi json")
 	rootCmd.Flags().String("outdir", "", "output dir")
 	viper.AutomaticEnv()
 	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))