Install Sitecore8 and prerequisites with Sitecore Install Framework and Sitecore Install Extensions

Install-Sitecore8.ps1

#requires -RunAsAdministrator 
#requires -Version 5.1
#requires -module SitecoreInstallFramework
#requires -module SitecoreInstallExtensions

#SIF will install SitecoreInstallExtension; we haven't to import module explicit
Import-Module SitecoreInstallFramework

$folderRoot = "C:\Users\Administrator\Downloads"

# Configure all parameters without default values
# or all parameters you want to overwrite
$prerequisitesParams =@{
    Path = "$folderRoot\Configs\sitecore-prerequisites.json"   
    LocalStorage = "$folderRoot"    
}
Install-SitecoreConfiguration @prerequisitesParams -Verbose


# Configure all parameters without default values
# or all parameters you want to overwrite
$sitecoreParams =@{
    Path = "$folderRoot\Configs\sitecore8-xp0.json"    
    SitecoreZip = "$folderRoot\Sitecore 8.2 rev. 171121.zip"   
    SitecoreZipFileName = "Sitecore 8.2 rev. 171121" 
    LicenseFile = "$folderRoot\license.xml"
    SqlServerName = "WIN-2B1IQG4IF33"
}
Install-SitecoreConfiguration @sitecoreParams -Verbose