Update install script to take in the version

Author: francoishill

README.md

@@ -7,15 +7,16 @@ Just a basic script runner to easily abort/continue on previous step failure
 
 #### Install on linux with curl script
 
-Ensure first that the `MY_OS` and `MY_ARCH` variables suit your system. The script does not validate the arguments but just print out a probable list.
+Ensure first that the `MY_OS`, `MY_ARCH` and `VER` variables suit your system. The script does not validate the arguments but just print out a probable list.
 
 This list is directly based on the available download files found here: https://github.com/golang-devops/yaml-script-runner/releases/latest.
 
 
 ```
 MY_OS=linux
 MY_ARCH=amd64
-curl -s https://raw.githubusercontent.com/golang-devops/yaml-script-runner/master/_scripts/install.sh | sudo bash /dev/stdin $MY_OS $MY_ARCH
+VER=v0.4
+curl -s https://raw.githubusercontent.com/golang-devops/yaml-script-runner/master/_scripts/install.sh | sudo bash /dev/stdin $VER $MY_OS $MY_ARCH
 ```
 
 #### Install from source (golang must be installed)

_scripts/install.sh

@@ -1,11 +1,11 @@
 #!/bin/sh
 
-VERSION=v0.3
 allowed_os=( "darwin" "freebsd" "linux" "netbsd" "openbsd" )
 allowed_arch=( "386" "amd64" )
 
-os=$1
-arch=$2
+version=$1
+os=$2
+arch=$3
 
 ## Do not validate for now, otherwise we might prevent a download that actually exists if this script is old
 # valid_os=0
@@ -41,9 +41,9 @@ echo Probable list of ARCH is ${allowed_arch[@]}
 echo For a full list of supported OS-ARCH look at list in https://github.com/golang-devops/yaml-script-runner/releases/latest
 
 echo Your input OS = "$os" and ARCH = "$arch"
-echo This is an install script for yaml-script-runner version $VERSION
+echo This is an install script for yaml-script-runner version $version
 
-URL=https://github.com/golang-devops/yaml-script-runner/releases/download/$VERSION/$os_$arch_yaml-script-runner
+URL=https://github.com/golang-devops/yaml-script-runner/releases/download/$version/$os_$arch_yaml-script-runner
 
 echo Now fetching binary at url $URL
 wget $URL -O /usr/local/bin/yaml-script-runner