FortAwesome/font-awesome-sass — pull request #49 by jokklan (2014-09-11 15:14:57+00:00)
Title: Change icon helper input params

I often want to add html options like a class to my icons, but it's not very often i want to have text. That means that i end up writing `nil` all the time (fx. `<%= icon :user, nil, class: "color-blue" %>`).

This pull request should fix that problem, and still be backwards compatible :)

Before:
```ruby
<%= icon :spinner, nil, class: "fa-spin" %>
#=>

<%= icon :spinner, "Loading", class: "fa-spin" %>
#=> Loading
```
After
```ruby
<%= icon :spinner, nil, class: "fa-spin" %>
#=>

<%= icon :spinner, class: "fa-spin" %>
#=>

<%= icon :spinner, "Loading", class: "fa-spin" %>
#=> Loading
```