Update version & README

Author: Takumasa Sakao

README.md

@@ -18,7 +18,7 @@ Terminal based Conway's Game of Life. Implemented in Go.
 Go to release page and download.
 
 ```shell
-$ wget https://github.com/sachaos/go-life/releases/download/v0.3.0/go-life_darwin_amd64 -O /usr/local/bin/go-life
+$ wget https://github.com/sachaos/go-life/releases/download/v0.4.0/go-life_darwin_amd64 -O /usr/local/bin/go-life
 $ chmod +x /usr/local/bin/go-life
 ```
 
@@ -45,6 +45,20 @@ $ go-life
 $ go-life --theme Ocean --pattern glider-gun
 ```
 
+### Load pattern
+
+#### Load from STDIN
+
+```shell
+$ curl http://www.conwaylife.com/patterns/glider.rle | go-life --file -
+```
+
+#### Load from file
+
+```shell
+$ go-life --theme Ocean --file ./glider.lif
+```
+
 ### Help
 
 ```shell

main.go

@@ -107,7 +107,7 @@ func main() {
 	app := cli.NewApp()
 	app.Name = "go-life"
 	app.Usage = "Conway's Game of Life"
-	app.Version = "0.3.0"
+	app.Version = "0.4.0"
 
 	app.Flags = []cli.Flag{
 		cli.BoolFlag{