Fix #98, support web hook

modules/httplib/README.md

@@ -0,0 +1,62 @@
+# httplib
+httplib is an libs help you to curl remote url.
+
+# How to use?
+
+## GET
+you can use Get to crawl data.
+
+	import "httplib"
+	
+	str, err := httplib.Get("http://beego.me/").String()
+	if err != nil {
+		t.Fatal(err)
+	}
+	fmt.Println(str)
+	
+## POST
+POST data to remote url
+
+	b:=httplib.Post("http://beego.me/")
+	b.Param("username","astaxie")
+	b.Param("password","123456")
+	str, err := b.String()
+	if err != nil {
+		t.Fatal(err)
+	}
+	fmt.Println(str)
+
+## set timeout
+you can set timeout in request.default is 60 seconds.
+
+set Get timeout:
+
+	httplib.Get("http://beego.me/").SetTimeout(100 * time.Second, 30 * time.Second)
+	
+set post timeout:	
+	
+	httplib.Post("http://beego.me/").SetTimeout(100 * time.Second, 30 * time.Second)
+
+- first param is connectTimeout.
+- second param is readWriteTimeout
+
+## debug
+if you want to debug the request info, set the debug on
+
+	httplib.Get("http://beego.me/").Debug(true)
+	
+## support HTTPS client
+if request url is https. You can set the client support TSL:
+
+	httplib.SetTLSClientConfig(&tls.Config{InsecureSkipVerify: true})
+	
+more info about the tls.Config please visit http://golang.org/pkg/crypto/tls/#Config	
+		
+## set cookie
+some http request need setcookie. So set it like this:
+
+	cookie := &http.Cookie{}
+	cookie.Name = "username"
+	cookie.Value  = "astaxie"
+	httplib.Get("http://beego.me/").SetCookie(cookie)
+