Nuclio function hello world for Smile's innovation article about FaaS

hello_world.go

package main 
import ( 
    "github.com/nuclio/nuclio-sdk-go"
)
func Handler(ctx *nuclio.Context, evt nuclio.Event) (interface{}, error) {
           return nuclio.Response{
                Body:        []byte("Hello, from nuclio :]"), 
           }, nil
}