Enhancements to Revel command

Reformat of code
Allow user to use a mix of command line arguments and flags
Enhance the import tool to detect missing packages in the modules side
Added test cases for all commands

revel/package_test.go

@@ -0,0 +1,30 @@
+package main_test
+
+import (
+	"github.com/revel/cmd/model"
+	"github.com/revel/cmd/revel"
+	"github.com/stretchr/testify/assert"
+	"os"
+	"testing"
+)
+
+// test the commands
+func TestPackage(t *testing.T) {
+	a := assert.New(t)
+	gopath := setup("revel-test-package",  a)
+
+	t.Run("Package", func(t *testing.T) {
+		a := assert.New(t)
+		c := newApp("package-test", model.NEW, nil, a)
+		main.Commands[model.NEW].RunWith(c)
+		c.Index = model.PACKAGE
+		c.Package.ImportPath = c.ImportPath
+		a.Nil(main.Commands[model.PACKAGE].RunWith(c), "Failed to run package-test")
+	})
+
+	if !t.Failed() {
+		if err := os.RemoveAll(gopath); err != nil {
+			a.Fail("Failed to remove test path")
+		}
+	}
+}