README.md in inline_svg-1.3.1 vs README.md in inline_svg-1.4.0

@@ -292,9 +292,18 @@
 
 ```html
 <svg class='svg-not-found'><!-- SVG file not found: 'some-missing-file.svg' --></svg>
 ```
 
+Alternatively, `inline_svg` can be configured to raise an exception when a file
+is not found:
+
+```ruby
+InlineSvg.configure do |config|
+  config.raise_on_file_not_found = true
+end
+```
+
 ## Contributing
 
 1. Fork it ( [http://github.com/jamesmartin/inline_svg/fork](http://github.com/jamesmartin/inline_svg/fork) )
 2. Create your feature branch (`git checkout -b my-new-feature`)
 3. Commit your changes (`git commit -am 'Add some feature'`)