I changed bower.json file to install FontAwesome like below and run npm install.
It installed FontAwesome 4.3.0.
I added the font-awesome.css by using confg/env/all.js. In the browser I can see the font-awesome.css has added to the html. But I can not see fonts on the web page. By inspecting element I could not found any font loaded.

Fonts are already on fonts folder of font-awesome in my source.