diff --git a/README.md b/README.md
index edebdbf..b792c13 100644
--- a/README.md
+++ b/README.md
@@ -2,5 +2,46 @@
 Swagger UI generator for Echo framework
 
 [![Go Report Card](https://goreportcard.com/badge/github.com/elvinchan/echoswagger)](https://goreportcard.com/report/github.com/elvinchan/echoswagger)
-
 [![Build Status](https://travis-ci.org/elvinchan/echoswagger.svg?branch=master)](https://travis-ci.org/elvinchan/echoswagger)
+[![codecov](https://codecov.io/gh/elvinchan/echoswagger/branch/master/graph/badge.svg)](https://codecov.io/gh/elvinchan/echoswagger)
+
+## Feature
+- No SwaggerUI html/css dependency
+- Highly integrated with echo, low intrusive design
+- Take advantage of the strong typing language to make it easy to use
+- Recycle garbage in time, low memory usage
+
+## Example
+```go
+package main
+
+import (
+	"net/http"
+
+	"github.com/elvinchan/echoswagger"
+	"github.com/labstack/echo"
+)
+
+func main() {
+	// ApiRoot with Echo instance
+	e := echoswagger.New(echo.New(), "/v2", "doc/", nil)
+
+	// Routes with parameters & responses
+	e.POST("/", createUser).
+		AddParamBody(User{}, "body", "User input struct", true).
+		AddResponse(http.StatusCreated, "successful", nil, nil)
+
+	// Start server
+	e.Echo().Logger.Fatal(e.Echo().Start(":1323"))
+}
+
+type User struct {
+	Name string
+}
+
+// Handler
+func createUser(c echo.Context) error {
+	return c.JSON(http.StatusCreated, nil)
+}
+
+```
diff --git a/wrapper.go b/wrapper.go
index f56903f..c593b17 100644
--- a/wrapper.go
+++ b/wrapper.go
@@ -20,7 +20,23 @@ Notice:
 4.只支持基本类型的Map Key
 */
 
+type ApiRouter interface {
+	// GET overrides `Echo#GET()` for sub-routes within the ApiGroup.
+	GET(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api
+
+	// POST overrides `Echo#POST()` for sub-routes within the ApiGroup.
+	POST(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api
+
+	// PUT overrides `Echo#PUT()` for sub-routes within the ApiGroup.
+	PUT(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api
+
+	// DELETE overrides `Echo#DELETE()` for sub-routes within the ApiGroup.
+	DELETE(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api
+}
+
 type ApiRoot interface {
+	ApiRouter
+
 	// ApiGroup creates ApiGroup. Use this instead of Echo#ApiGroup.
 	Group(name, prefix string, m ...echo.MiddlewareFunc) ApiGroup
 
@@ -53,17 +69,7 @@ type ApiRoot interface {
 }
 
 type ApiGroup interface {
-	// GET overrides `Echo#GET()` for sub-routes within the ApiGroup.
-	GET(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api
-
-	// POST overrides `Echo#POST()` for sub-routes within the ApiGroup.
-	POST(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api
-
-	// PUT overrides `Echo#PUT()` for sub-routes within the ApiGroup.
-	PUT(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api
-
-	// DELETE overrides `Echo#DELETE()` for sub-routes within the ApiGroup.
-	DELETE(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api
+	ApiRouter
 
 	// SetDescription sets description for ApiGroup.
 	SetDescription(desc string) ApiGroup
@@ -220,6 +226,22 @@ func New(e *echo.Echo, basePath, docPath string, i *Info) ApiRoot {
 	return r
 }
 
+func (r *Root) GET(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api {
+	return r.appendRoute(echo.GET, r.echo.GET(path, h, m...))
+}
+
+func (r *Root) POST(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api {
+	return r.appendRoute(echo.POST, r.echo.POST(path, h, m...))
+}
+
+func (r *Root) PUT(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api {
+	return r.appendRoute(echo.PUT, r.echo.PUT(path, h, m...))
+}
+
+func (r *Root) DELETE(path string, h echo.HandlerFunc, m ...echo.MiddlewareFunc) Api {
+	return r.appendRoute(echo.DELETE, r.echo.DELETE(path, h, m...))
+}
+
 func (r *Root) Group(name, prefix string, m ...echo.MiddlewareFunc) ApiGroup {
 	if name == "" {
 		panic("echowagger: invalid name of ApiGroup")
diff --git a/wrapper_test.go b/wrapper_test.go
new file mode 100644
index 0000000..bce3ada
--- /dev/null
+++ b/wrapper_test.go
@@ -0,0 +1,77 @@
+package echoswagger
+
+import (
+	"testing"
+
+	"github.com/labstack/echo"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNew(t *testing.T) {
+	tests := []struct {
+		echo        *echo.Echo
+		basePath    string
+		docPath     string
+		info        *Info
+		expectPaths []string
+		panic       bool
+		name        string
+	}{
+		{
+			echo:        echo.New(),
+			basePath:    "/",
+			docPath:     "doc/",
+			info:        nil,
+			expectPaths: []string{"/doc/", "/doc/swagger.json"},
+			panic:       false,
+			name:        "Normal",
+		},
+		{
+			echo:     echo.New(),
+			basePath: "/",
+			docPath:  "doc",
+			info: &Info{
+				Title: "Test project",
+				Contact: &Contact{
+					URL: "https://github.com/elvinchan/echoswagger",
+				},
+			},
+			expectPaths: []string{"/doc", "/doc/swagger.json"},
+			panic:       false,
+			name:        "Path slash suffix",
+		},
+		{
+			echo:  nil,
+			panic: true,
+			name:  "Panic",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.panic {
+				assert.Panics(t, func() {
+					New(tt.echo, tt.basePath, tt.docPath, tt.info)
+				})
+			} else {
+				apiRoot := New(tt.echo, tt.basePath, tt.docPath, tt.info)
+				assert.NotNil(t, apiRoot.(*Root))
+
+				root := apiRoot.(*Root)
+				assert.NotNil(t, root.spec)
+
+				assert.Equal(t, root.spec.BasePath, tt.basePath)
+				if tt.info == nil {
+					assert.Equal(t, root.spec.Info.Title, "Project APIs")
+				} else {
+					assert.Equal(t, root.spec.Info, tt.info)
+				}
+
+				assert.NotNil(t, root.echo)
+				assert.Len(t, root.echo.Routes(), 2)
+				res := root.echo.Routes()
+				paths := []string{res[0].Path, res[1].Path}
+				assert.ElementsMatch(t, paths, tt.expectPaths)
+			}
+		})
+	}
+}