We try to add a custom icon to a custom action we are working on. What's process for doing that? Where will the image file go and how can we correctly add that to the app.json?
You can find documentation on how to add a custom icon in our Styleguide:
Only Font Awesome 4.2 icons can be used at this point.
There is also sample code which demonstrates how to add a custom action to the record view toolbar or right menu:
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