update doco

Makefile

@@ -1,12 +1,12 @@
-.PHONY: install release
+.PHONY: build release
 
 ARTIFACTS_DIR=artifacts/${VERSION}
 GITHUB_USERNAME=liweiyi88
 
-install:
+build:
 	go install
+	go build .
 
 release:
-	GOOS=windows GOARCH=amd64 go build -o $(ARTIFACTS_DIR)gosnakego_windows_amd64.exe
-	GOOS=darwin GOARCH=amd64 go build -o $(ARTIFACTS_DIR)gosnakego_darwin_amd64
-	GOOS=linux GOARCH=amd64 go build -o $(ARTIFACTS_DIR)gosnakego_linux_amd64
+	GOOS=windows go build -o $(ARTIFACTS_DIR)gosnakego_windows_amd64.exe
+	GOOS=darwin go build -o $(ARTIFACTS_DIR)gosnakego_darwin_amd64

README.md

@@ -7,23 +7,16 @@ A snake game written in Go
 ### Get the binary
 You can get the binary executable for your operating system from the [release page](https://github.com/liweiyi88/gosnakego/releases)
 
-Windows: `gosnakego_windows_amd64.exe`  
-MacOS: `gosnakego_darwin_amd64`  
-Linux: `gosnakego_linux_amd64`
+Windows: `gosnakego_windows_amd64.exe`
+MacOS: `gosnakego_darwin_amd64`
 
 For MacOS, you can also run the following command to download the binary.
 ```
-$ sudo wget https://github.com/liweiyi88/gosnakego/releases/download/v0.2.0/gosnakego_darwin_amd64 -O /usr/local/bin/gosnakego
+$ sudo wget https://github.com/liweiyi88/gosnakego/releases/download/v0.3.0/gosnakego_darwin_amd64 -O /usr/local/bin/gosnakego
 $ sudo chmod +x /usr/local/bin/gosnakego
 ```
 
-For Linux, you can also run the following command to download the binary.
-```
-$ sudo wget https://github.com/liweiyi88/gosnakego/releases/download/v0.2.0/gosnakego_linux_amd64 -O /usr/local/bin/gosnakego
-$ sudo chmod +x /usr/local/bin/gosnakego
-```
-
-### Build yourself
+### Build yourself (For linux user)
 ```
 $ git clone https://github.com/liweiyi88/gosnakego.git
 $ make install