The svg-builder directory in this project, contains a complete inline SVG build workflow. It requires you to have an understanding of things like Grunt and a bit of comfort with the command line. You may also want to do a bit of reading to get some background on inline SVG works. Here are some hand-picked posts to get you started:

• Icon Font vs. SVG – this is the one that convinced me it was time to try using inline SVG in a production system.
• Using SVG – just a great overview on SVG in use.
• SVG Use External Source – information on caching SVG by using an external defs file.
• Swapping Icons – some very practical tips on how to, well, swap icons.
• All CSS-Tricks articles tagged "svg" – since Chris has become a bit of curator on the topic, this is useful too!

Ok…ok, the tl;dr is to hit the terminal and type:

git clone -b svg-inline-experiments --single-branch https://github.com/unicorn-ui/Buttons.git Buttons && cd Buttons && npm install && pushd svg-builder && npm install && grunt && popd && grunt dev

And then go ahead and have a look at the Gruntfile.js