diff --git a/README.md b/README.md
index 99a6d0b..8023dc5 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,7 @@ BenchmarkZeus_GithubAll 		| 2000 		| 944234 	| 300688 	| 2648
 (3): Heap Memory (B/op)  
 (4): Average Allocations per Repetition (allocs/op)  
 
-##Gin v1. stable
+## Gin v1. stable
 
 - [x] Zero allocation router.
 - [x] Still the fastest http router and framework. From routing to writing.
@@ -84,6 +84,7 @@ BenchmarkZeus_GithubAll 		| 2000 		| 944234 	| 300688 	| 2648
 
 
 ## Start using it
+
 1. Download and install it:
 
     ```sh
@@ -102,7 +103,7 @@ BenchmarkZeus_GithubAll 		| 2000 		| 944234 	| 300688 	| 2648
     import "net/http"
     ```
 
-##API Examples
+## API Examples
 
 #### Using GET, POST, PUT, PATCH, DELETE and OPTIONS
 
@@ -412,7 +413,7 @@ $ curl -v --form user=user --form password=password http://localhost:8080/login
 ```
 
 
-#### XML and JSON rendering
+#### XML, JSON and YAML rendering
 
 ```go
 func main() {
@@ -442,6 +443,10 @@ func main() {
 		c.XML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
 	})
 
+	r.GET("/someYAML", func(c *gin.Context) {
+		c.YAML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK})
+	})
+
 	// Listen and server on 0.0.0.0:8080
 	r.Run(":8080")
 }
@@ -708,3 +713,10 @@ endless.ListenAndServe(":4242", router)
 An alternative to endless:
 
 * [manners](https://github.com/braintree/manners): A polite Go HTTP server that shuts down gracefully.
+
+## Example
+
+Awesome project lists using [Gin](https://github.com/gin-gonic/gin) web framework.
+
+* [drone](https://github.com/drone/drone): Drone is a Continuous Delivery platform built on Docker, written in Go
+* [gorush](https://github.com/appleboy/gorush): A push notification server written in Go.
diff --git a/ginS/README.md b/ginS/README.md
index c186b1f..ac563a2 100644
--- a/ginS/README.md
+++ b/ginS/README.md
@@ -11,7 +11,7 @@ import (
 )
 
 func main() {
-	ginS.GET("/", func(c *gin.Context) { c.String("Hello World") })
+	ginS.GET("/", func(c *gin.Context) { c.String(200, "Hello World") })
 	ginS.Run()
 }
 ```
diff --git a/mode.go b/mode.go
index fcb8f8f..f44b071 100644
--- a/mode.go
+++ b/mode.go
@@ -5,6 +5,7 @@
 package gin
 
 import (
+	"io"
 	"os"
 
 	"github.com/gin-gonic/gin/binding"
@@ -30,8 +31,8 @@ const (
 // To support coloring in Windows use:
 // 		import "github.com/mattn/go-colorable"
 // 		gin.DefaultWriter = colorable.NewColorableStdout()
-var DefaultWriter = os.Stdout
-var DefaultErrorWriter = os.Stderr
+var DefaultWriter io.Writer = os.Stdout
+var DefaultErrorWriter io.Writer = os.Stderr
 
 var ginMode = debugCode
 var modeName = DebugMode