This may be an easy Solution
Get this repository that is a fork of the original repository Google published.
Install it with bower or npm
bower install material-design-icons-iconfont --save
npm install material-design-icons-iconfont --save
Import the css File on your HTML Page
<style>
@import url('node_modules/material-design-icons-iconfont/dist/material-design-icons.css');
</style>
or
<link rel="stylesheet" href="node_modules/material-design-icons-iconfont/dist/material-design-icons.css">
Test: Add an icon inside body tag of your HTML File
<i class="material-icons">face</i>
If you see the face icon, you are OK.
If does not work, try add this ..
as prefix to node_modules
path:
<link rel="stylesheet" href="../node_modules/material-design-icons-iconfont/dist/material-design-icons.css">