Installation methods

Download and unpack via linux/bsd command line

wget http://vihv.org/downloads/vihv.zip && unzip vihv.zip -d /usr/share/php

more..

Using composer

{
  "type":"project",
  "repositories": [
   {
    "type": "package",
    "package": {
    "name": "vihv/vihv",
    "version": "3.0.1",
    "dist": {
      "url": "http://lcc.vihv.org/downloads/vihv-latest.zip",
      "type": "zip"
      }
    }
  }],
  "require":{
    "vihv/vihv":"3.0.1"
    },
  "config": {
    "secure-http": false
  }
}
more..

Install as Wordpress Plugin

Wordpress plugin page https://wordpress.org/plugins/common-options-for-vihvlcc-based-themes/